Specifically, what does the Google Finance average volume indicate?
I hovered over the label for trading volume and the following message popped up: Volume / average volume  Volume is the number of shares traded on the   latest trading day. The average volume is measured over 30 days.
Investopedia does have tutorials about investments in different asset classes. Have you read them ? If you had heard of CFA, you can read their material if you can get hold of it or register for CFA. Their material is quite extensive and primarily designed for newbies.  This  is one helluva book and advice coming from persons who have showed and proved their tricks. And the good part is loads of advice in one single volume. And what they would suggest is probably opposite of what you would be doing in a hedge fund. And you can always trust google to fish out resources at the click of a button. "Is there any particular area of business that you have interest?    What free resources do you currently use (general web browsing)?  Here are some magazines out there that I find interesting:  * **Fast Company** - $12.99 / Year / 10 Issues - Magazine focused on tech, innovation, leadership and design.  I don't subscribe, but I regularly purchase Fast Company, Entrepreneur,and Inc. when I am traveling.  They make for a perfect airplane read and I typically find great takeaways or clip articles from it.  * **Entrepreneur** - $11.97 / Year / 12 Issues - Obviously by the title this is catered to the entrepreneurial mindset.  It provides informational and inspirational stories from entrepreneurs and for entrepreneurs.  I enjoy reading this and probably read 3 or 4 issues per year.  I'm not a regular reader, but at times I have felt like content may run lean at times.    * **Inc** - $12.99 / Year / 10 Issues - Inc. feels like a blend of Fast Company and Entrepreneur.  The articles are aimed at the business owner for starting and running operations.  * **Businessweek** - $5 / Year / 12 Issues - I regularly read Businessweek, but primarily on their website.  I have picked up issues occasionally which are great, but their web provides a fair amount of access.  They seem to have a nice blend of news and unique stories about specific companies, products, and investment.  Recently they had interesting articles with fair depth on the CEO of Burger King, and the history of Sriracha.  * **Forbes** - $24.99 / Year / 26 Issues - I love the volume of content that Forbes provides and they seem to have a nice mix on a variety of subjects.  I use Forbes as my frontpage of the internet for business in conjunction with several others.  I actually feel like Forbes and Businessweek provide a perfect blend of business news with shocking little redundancy.  * **Harvard Business Review** - Wasn't able to quickly see a price.  I reference HBR a fair amount in regards to business discussions and think they provide excellent research material and information.  The writing style and layout isn't quite as captivating as some of the other magazines such as Fast Company, but the quality is excellent,  * **WSJ** - Obviously putting out a high volume of content, but you definitely pay for it.  I know a fair number of people who read it, but I actually have never known anyone to subscribe to it if that makes sense.  All the readers I know either receive a subscription through their work or university.  I think that shows the content is valuable and quality, but it might not justify the cost you have to pay for it as an individual reader.  I use a variety of websites to get business news, general education, and help me overall to understand the business world.  Specifically from the ones listed above I check Businessweek and Forbes daily for morning or lunch reading.  Forbes in particular does a solid job due to all of their external content contributors.  Seems like an interesting way to provide content if you can curate it correctly.    If you're more interested in the finance/investment world then I think Yahoo Finance and CNN Money are great.  Focusing specifically on investments then I really enjoy the content I get from Motley Fool and Seeking Alpha.  Some articles get pretty deep in regards to finance and investing, but overall I think they give great insight.  I read BusinessInsider, but I'll be honest I feel dirty.  Sometimes I find an interesting piece that leads me elsewhere to research more.  The content is primarily distributed in a ""Buzzfeed"" style format which has some questionable headlines and less professional content (""7 Crazy Facts That Sound Fake But Are Actually True"").  In Summary, I think you could learn a good amount on a variety of topics while staying plugged into news and developments in the business world for free.  I'm sure a few other people will chime in with other great sources that I didn't capture and some that I didn't even know existed.  I would start by reading a few of these sites I listed regularly and continue posting in this sub to help us keep the conversation going!" When you look at the charts in Google Finance, they put the news on the right hand side. The time stamp for each news item is indicated with a letter in the chart. This often shows what news the market is reacting to. In your example:  Clicking on the letter F leads to this Reuters story: http://www.reuters.com/article/2011/02/04/usa-housing-s-idUSWAT01486120110204 At this time, Google Finance doesn't support historical return or dividend data, only share prices.  The attributes for mutual funds such as return52 are only available as real-time data, not historical.   Yahoo also does not appear to offer market return data including dividends. For example, the S&P 500 index does not account for dividends--the S&P ^SPXTR index does, but is unavailable through Yahoo Finance. I would say the most challenging fact for this assertion is that HFT firms operate with extremely limited capital bases. For a stock with say 10m shares ADV, even a very large and successful HFT strategy might use a position limit of no more than 5000 shares.  That is to say if you sum up and net the buys and sells for a stock across the day the HFT firm will never exceed 10,000 shares (2x position limits assuming it completely flipped) on a stock that trades 10,000,000 shares on a given day. The high volumes are attained through high turnover, the strategy might trade up to 500,000 shares (or 5% of the volume) attaining a 50x turnover.  But that brings me back to the original point. In the market microstructure literature market impact generally has been found to scale linearly or even sub-linearly for net volume executed.   If I alternate between thousands of 1 lot buy and sell orders, it would be very difficult for me to move the market because the market impact of every one of my buy orders roughly cancels the market impact of my almost exactly equal number of sell orders.   There might be a higher-order mechanism at work, but I'm genuinely curious what you think it might be. How could strategies that attain such small net positions have such out-sized impact on market direction? "For US equities, Edgar Online is where companies post their government filings to the SEC. On Google Finance, you would look at the ""SEC filings"" link on the page, and then find their 10K and 10Q documents, where that information is listed and already calculated. Many companies also have these same documents posted on their Investor Relations web pages." Interesting stuff, but I'd want to know how it occurred to them to check for a Citigroup Bear Run.  It sounds like they simply datamined for one case which fit their hypothesis.  I'd also like to see (1) how other finance companies fared in the same period and (2) how many upticks were available to sell on. The first statement is talking about a sudden sharp increase in volume (double or more of average volume) with a sudden increase in price. In other words, there has been a last rush to buy the stock exhausting all the current bulls (buyers), so the bears (sellers) take over, at least temporarily. Whilst the second statement is talking about a gradual increase in volume as the price up trends (thus the use of a volume oscillator). In other words (in an uptrend), the bulls (buyers) are gradually increasing in numbers sending the price higher, and new buyers keep entering the market. (The opposite is the case for a down-trend).