Offer your thoughts or opinion on the input financial query or topic using your financial background.

How and Should I Invest (As a college 18 year old with minimal living expenses)?
The $1K in funds are by default your emergency fund. If absolutely necessary, emergency funds may need to come from debt, a credit capacity, focus on building credit to leverage lower rates for living expenses eventually needed. Profitable organizations & proprietors, borrow at a lower cost of capital than their return. Join your local credit union, you're welcome to join mine online, the current rates for the first $500 in both your checking and savings is 4.07%, it's currently the fourth largest in the U.S. by assets. You may join as a "family member" to me (Karl Erdmann), not sure what their definition of "family" is, I'd be happy to trace our ancestry if need be or consider other options. Their current incentive program, like many institutions have often, will give you $100 for going through the hassle to join and establish a checking and savings. Some institutions, such as this credit union, have a lower threshold to risk, applicants may be turned down for an account if there is any negative history or a low credit score, shooting for a score of 600 before applying seems safest.  The web services, as you mentioned, have significantly improved the layman's ability to cost effectively invest funds and provide liquidity. Robinhood currently seems to be providing the most affordable access to the market. It goes without saying, stay objective with your trust of any platform, as you may have noticed, there is a detailed explanation of how Robinhood makes their money on this stack exchange community, they are largely backed by venture funding, hopefully the organization is able to maintain a low enough overhead to keep the organization sustainable in the long run. The services that power this service such as Plaid, seem promising and underrated, but i digress. The platform gives access for users to learn how investing works, it seems safest to plan a diversified portfolio utilizing a mix of securities,such as low Beta stocks or "blue chip" companies with clear dividend policies. One intriguing feature, if you invest in equities is casting votes on decisions in shareholder meetings.  Another popular investment asset class that is less liquid and perhaps something to work toward is real estate. Google the economist "Matthew Rognlie" for his work on income equality on this type of investment. There are many incentives for first time homeowners, saving up for a down payment is the first step. Consider adding to your portfolio a Real Estate Investment Trust (REITs) to gain a market position. Another noteworthy approach to this idea is an investment commercial property cooperative organization, currently the first and only one is called NorthEast Investment Cooperative, one stock of class A is $1K.  If you are interested and plan to focus on equities, consider dropping into your college's Accounting Capstone course to learn more about the the details of fundamental and technical analysis of an organization. The complexities of investing involve cyclical risk, macro and micro economic factors,  understanding financial statements and their notes, cash flow forecasting - discounting, market timing, and a host of other details Wikipedia is much more helpful at detailing. It's safe to assume initial investment decisions by unsophisticated investors are mostly whimsical, and likely will only add up to learning opportunities, however risk is inherit in all things, including sitting on cash that pays a price of inflation. A promising mindset in long term investments are in organizations that focus on conscious business practices. Another way to think of investing is that you are already somewhat of a "sophisticated investor" and could beat the market by what you know given your background, catching wind of certain information first, or acting on a new trends or technology quickly. Move carefully with any perhaps biased "bullish" or "bearish" mindset. Thinking independently is helpful, constantly becoming familiar with different ideas from professions in a diverse set of backgrounds, and simulating decisions in portfolio's. Here is an extremely limited set of authors and outlets that may have ideas worth digging more into, MIT Tech Reviews (Informative), Bloomberg TV (it's free, informative), John Mackey (businessman), Paul Mason (provocative journalist). Google finance is a simple and free go-to application, use the "cost basis" feature for "paper" or real trades, it's easy to import transactions from a .csv.   This seems sufficient to start off with. Enjoy the journey, aim for real value with your resources.