Quick answer: You could do a lot worse than parking it in an index fund, so yeah, that's a good approach :) If you have a 401(k) or other retirement account, i

Quick answer: You could do a lot worse than parking it in an index fund, so yeah, that's a good approach :) If you have a 401(k) or other retirement account, it is quite common for those to offer an S&P 500 index fund where you could invest your money. If you want to do it in a taxable brokerage account, you should open an account with Vanguard and buy their Total Stock Market index fund (VTSMX, or VTSAX if you have more than $10,000 to invest). Then stay the course - if the market tanks 50% the day after you put your money in, don't panic. Wait it out. Your investment horizon here is at the very least 10 years. But that's the quick, the-best-time-to-invest-is-tomorrow-so-just-do-it answer. There are a number of things you should do if you want to learn more about how to invest your money in stocks (and maybe bonds): 0) A good resource to get started quickly is If You Can, by William Bernstein: https://smile.amazon.com/If-You-Can-Millennials-Slowly-ebook/dp/B00JCC5JKI/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=1472318151&sr=8-3 https://smile.amazon.com/If-You-Can-Millennials-Slowly-ebook... But you can skip it if you want to dive deeper with the stuff that follows. 1) Learn about what investing in the stock market means, what's the nature of it and what to expect from it. I have two recommendations here: 1.1) jlcollinsnh's Stock Series: http://jlcollinsnh.com/stock-series/ http://jlcollinsnh.com/stock-series/ He recently released a book (The Simple Path to Wealth) which is supposedly a better-edited version of the Stock Series. He's a rather optimistic guy, but what he says is not wrong. He stays away from investing in non-US markets, which is not the most common position among indexers. 1.2) A Random Walk Down Wall Street, by Burton Malkiel. It's an amazing book that everyone should read if they want to learn about the stock market. Many people recommend Bogle's books (he's the father of index investing), but I find them incredibly tedious to read. 2) Learn about the different investment accounts available to you - 401(k)/403(b)/457(b)s, IRAs, HSAs, taxable brokerage accounts. Each one receives different tax treatment and you should be familiar with that in order to avoid "tax drag" i.e. taxes slowing down the growth of your investments. 3) Another resource I highly recommend is the Bogleheads wiki: https://www.bogleheads.org/wiki/Main_Page https://www.bogleheads.org/wiki/Main_Page. In particular, check out the following pages: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investing_start-up_kit https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investing_s... https://www.bogleheads.org/wiki/Three-fund_portfolio https://www.bogleheads.org/wiki/Three-fund_portfolio https://www.bogleheads.org/wiki/Tax-efficient_fund_placement https://www.bogleheads.org/wiki/Tax-efficient_fund_placement 4) Don't obsess about it once you get started. After you've learned a few things it's tempting to start "tweaking" your investments here and there, but if you do that often you do yourself more harm than good. Invest your money then go have some fun :)