Analyze stock value
"A Bloomberg terminal connected to Excel provides the value correcting splits, dividends, etc. Problem is it cost around $25,000. Another one which is free and I think that takes care of corporate action is ""quandl.com"". See an example here." It seems like you want to compare the company's values not necessarily the stock price.  Why not get the total outstanding shares and the stock price, generate the market cap.  Then you could compare changes to market cap rather than just share price.
If you just want to save for retirement, start with a financial planning book, like this one: http://www.amazon.com/Smart-Simple-Financial-Strategies-People/dp/0743269942 and here's my editorial on the investing part: http://blog.ometer.com/2010/11/10/take-risks-in-life-for-savings-choose-a-balanced-fund/ If you're thinking of spending time stock-picking or trading for fun, then there are lots of options.  Web site: Morningstar Premium (http://morningstar.com) has very good information. They analyze almost all large-cap stocks and some small caps too, plus mutual funds and ETFs, and have some good general information articles. It doesn't have the sales-pitch hot-blooded tone of most other sites. Morningstar analyzes companies from a value investing point of view which is probably what you want unless you're day trading. Also they analyze funds, which are probably the most practical investment. Books: If you want to be competent (in the sense that a professional investor trying to beat the market or control risk vs. the market would be) then I thought the CFA curriculum was pretty good: However, this will quickly teach you how much is involved in being competent. The level 1 curriculum when I did it was 6 or 7 thick textbooks, equivalent to probably a college semester courseload. I didn't do level 2 or 3. I don't think level 1 was enough to become competent, it's just enough to learn what you don't know. The actual CFA charter requires all three levels and years of work experience. If you more want to dabble, then Benjamin Graham's The Intelligent Investor certainly isn't a bad place to start, but you'd also want to read some efficient markets stuff (Random Walk Down Wall Street, or something by Bogle, or The Intelligent Asset Allocator http://www.amazon.com/Intelligent-Asset-Allocator-Portfolio-Maximize/dp/0071362363, are some options). It wouldn't be bad to just read a textbook like http://www.amazon.com/Investments-Irwin-Finance-Zvi-Bodie/dp/0256146381 which would be the much-abridged version of the CFA level 1 stuff. If you're into day trading / charting, then I don't know much about that at all, some of the other answers may have some ideas. I've never been able to find info on this that didn't seem like it had a sketchy sales pitch kind of vibe. Honestly in a world of high-frequency trading computers I'm skeptical this is something to get into. Unless you want to program HFT computers: http://howtohft.wordpress.com/ "It's not necessarily bad but it can cause the stock price to become a lot more volatile. Depends on which side of the bet you're on ;) Suppose a hedge fund manager thinks a company is poorly run. He may buy a ton of shares so that he can get rid of the current CEO and replace it with his/her own. For the hedge fund and others long on the stock, this is good. Those who are trading options or using some short-term strategies could get screwed because of the sudden volatility.  My next point is related to the above. What is the intrinsic value of a stock? The current price of a stock is the equilibrium of all investor's perception of the stock's value. Professionals make up a value for a stock using models such as DCF. Once they do so they trade based on what they believe the value of the stock is. You might calculate a stock is worth 70 and I believe it's 80 so the stock price is going to fluctuate a bit but it should keep within that range (assuming we're the only investors). Then comes a hedge fund manager, say Carl Icahn, and discloses a stake in our stock. ""Wow, the stock must be really valuable!"" Everyone starts buying this stock so up it goes to 90, simply because the guy who seems to know what he's doing bought it. The point here is that now it's not trading based on intrinsic value, now it's purely psychological. Ie. it's now a momentum stock, which you have no idea when it'll crash. Look at Tesla, Netflix, or just google momentum stocks. All the big crashes in stock prices happen when these big funds unload their stocks. A surge in supply will cut the price. The problem is you can't predict when some fund manager will decide to sell some stake of his.  Tying everything together is liquidity. The more liquid a stock is, the easier it is to obtain and the less volatile it is. The more people playing the game, with not too big shares of stock, the faster the price will converge to some equilibrium and with less volatility. Institutional investors take away liquidity." Smallest risk of default would depend on where Alice and Bob live I suppose, but lets assume they are in a lower yielding nation where default is not a big concern.  Remember for instance that Greece was a lower yielding nation at one point and that the US has defaulted before. Let's start with Bob because he is easier to analyze.  Yield curves inversions generally pre-date recessions which is generally not so good for Bob as rates tend to drop during recessions and he will be at the short end of the curve so his bonds will be less sensitive.  However, he will generally get higher yields in good times to make up for this, but these higher yields come with a price in that he is generally much more sensitive to yield changes and can get much larger swings in portfolio value. First off as JB mentioned Alice would likely own inflation-linked (IL) bonds.  Which behave fairly differently from Bob's bonds. However, to keep this simple lets say they live in a place without IL bonds or IL bonds are not a consideration.  Then generally Alice has lower yielding bonds in good times but may do very well when the fed steps in during a crisis. So, who wins in the long run?  Likely Christi who owns a mix of a broad index of stocks and bonds in a risk mix where she wouldn't have to sell in downturns.  Especially, as Christi wouldn't have to pay the trading costs of moving her whole portfolio between long and short bonds.  Between Bob and Alice however Bob would likely win in the long run as the markets generally reward risk taking in the long run.  Still inflation (even without the IL bonds) and general rate trends (long-term rates are historically low right now) could have Bob losing for uncomfortably long periods. Option prices consist of two parts: the intrinsic value (the difference between the strike and the current price of the stock) and a time premium, representing the probability that the stock will end up above the strike for a call (or below for a put).   All else being equal, options decline in value as time passes, since there is less uncertainty about the expected value of the stock at expiration and thus the time premium is smaller.  Theta is the measure of the change in value in one day.  So for every day that passes, the calls you sold are going down by $64.71 (which is positive to you since you sold them at a higher value) and the calls you sold are going down by $49.04. So your position (a short spread) is gaining $15.67 each day (assuming no change in stock price or volatility). In reality, the stock price and volatility also change every day, and those are much stronger drivers of the value of your options.  In your case, however, the options are deep out of the money, meaning it's very likely that they'll expire worthless, so all you have left is time premium, which is decaying as time goes on. "I think you've got basics, but you may have the order / emphasis a bit wrong. I've changed the order of the things you've learned in to what I think is the most important to understand: Owning a stock is like owning a tiny chunk of the business Owning stock is owning a tiny chunk of the business, it's not just ""like"" it. The ""tiny chunks"" are called shares, because that is literally what they are, a share of the business. Sometimes shares are also called stocks. The words stock and share are mostly interchangeable, but a single stock normally means your holding of many shares in a business, so if you have 100 shares in 1 company, that's a stock in that company, if you then buy 100 shares in another company, you now own 2 stocks. An investor seeks to buy stocks at a low price, and sell when the price is high. Not necessarily. An investor will buy shares in a company that they believe will make them a profit. In general, a company will make a profit and distribute some or all of it to shareholders in the form of dividends. They will also keep back a portion of the profit to invest in growing the company. If the company does grow, it will grow in value and your shares will get more valuable. Price (of a stock) is affected by supply/demand, volume, and possibly company profits The price of a share that you see on a stock ticker is the price that people on the market have exchanged the share for recently, not the price you or I can buy a share for, although usually if people on the market are buying and selling at that price, someone will buy or sell from you at a similar sort of price. In theory, the price will be the companies total value, if you were to own the whole thing (it's market capitalisation) divided by the total number of shares that exist in that company. The problem is that it's very difficult to work out the total value of a company. You can start by counting the different things that it owns (including things like intellectual property and the knowledge and experience of people who work there), subtract all the money it owes in loans etc., and then make an allowance for how much profit you expect the company to make in the future. The problem is that these numbers are all going to be estimates, and different peoples estimates will disagree. Some people don't bother to estimate at all. The market makers will just follow supply and demand. They will hold a few shares in each of many companies that they are interested in. They will advertise a lower price that they are willing to buy at and a higher price that they will sell at all the time. When they hold a lot of a share, they will price it lower so that people buy it from them. When they start to run out, they will price it higher. You will never need to spend more than the market makers price to buy a share, or get less than the market makers price when you come to sell it (unless you want to buy or sell more shares than they are willing to). This is why stock price depends on supply and demand. The other category of people who don't care about the companies they are trading are the high speed traders. They just look at information like the past price, the volume (total amount of shares being exchanged on the market) and many other statistics both from the market and elsewhere and look for patterns. You cannot compete with these people - they do things like physically locate their servers nearer to the stock exchanges buildings to get a few milliseconds time advantage over their competitors to buy shares quicker than them." I would recommend reading Intelligent Investor first. It was written slightly more recently (1949) than Security Analysis (1934). More important is that a recently revised edition* of Intelligent Investor was published. The preface and appendix were written by Warren Buffett. Intelligent Investor is more practical as an introduction for a novice. You may decide not to read Security Analysis at all, as it seems more like an academic text or professional's guide i.e. for accounting. Benjamin Graham's Intelligent Investor remains relevant. It is used, successfully, as a guide for value investing, despite the hysteria of market sentiment and day-to-day variations, even extreme volatility. For example, I just read a nice article about applying the value investing principles extolled in Intelligent Investor a few weeks ago. It was written in the context of current markets, which is amazing, to be so applicable, despite the passage of decades. For reference, you might want to glance at this book review (published in March 2010!) of the original 1934 edition of Security Analysis.     * The URL links to a one-paragraph summary by U.S. News & World Report. It does not link to a book sales website! "Here's a link to an online calculator employing the Discounted Cash Flow method:  Discounted Cash Flows Calculator.  Description: This calculator finds the fair value   of a stock investment the   theoretically correct way, as the   present value of future earnings. You   can find company earnings via the box   below.   [...] They also provide a link to the following relevant article:  Investment Valuation: A Little Theory.  Excerpt: A company is valuable to stockholders   for the same reason that a bond is   valuable to bondholders: both are   expected to generate cash for years   into the future. Company profits are   more volatile than bond coupons, but   as an investor your task is the same   in both cases: make a reasonable   prediction about future earnings, and   then ""discount"" them by calculating   how much they are worth today. (And   then you don't buy unless you can get   a purchase price that's less than the   sum of these present values, to make   sure ownership will be worth the   headache.)   [...]" "Stock returns cannot be evaluated on its own. You need to take into account inflation and the return of other investment vehicles. Over the long run, you want to earn more than your peers (ie inflation), or lose less than them. Stock lets you buy into the profits of a company managed by others. So the fundamental question is ""do those company managers make better decision than average person?"" Of course there are times when they make awful decisions (eg just before dotcom bubble), and sometimes the best decision is to close the business. But overall those people are much better educated, have higher IQ, more resourceful, etc, and so over long time and across all the companies, this is correct and hence the stock market premium."