i liked Investing For Dummies, it gives you fundamental to medium knowledge about pretty much every investing option there is, and you can look more into the investing routes that fit your risk attitude.

but if you’re not very interested in investing, then I would look into index funds specifically, which means you’ll invest some amount of money, usually a minimum of $1,000, into a fund composed of hundreds of stocks, so you’ll own exposure to the majority of the market, a fraction of every industry instead of investing in just a few different companies.

index funds are a fairly simple set it and forget it type of investment with a good return and don’t vary much regardless of how the overall market or different industries are doing.

you usually pay a small commission annually to the company who manages the fund you invest in, and the trade-off is that you put in money, have access to the entire stock market, watch your investment gain interest and you don’t have to do anything else, just let it gain compound interest until you want to take your money out.