I'd start with a couple of great books you should be able to get from the library:
* The Four Pillars of Investing: https://www.amazon.com/Four-Pillars-Investing-Building-Portfolio-ebook/dp/B0041842TW * Are You a Stock or a Bond: https://www.amazon.com/Are-You-Stock-Bond-Financial/dp/0133115291 * A Random Walk Down Wall Street: https://www.amazon.com/Random-Walk-Down-Wall-Street/dp/0393358380
All of these point to fundamentals about investing:
* The first step is to identify your risk tolerance and goals. That's way more important that the specific vehicles of investing. * Unless you are a professional investor, it is highly unlikely you'll beat the professionals (and not likely even then) so broad diversification is a good idea.