A bunch of people have given well intentioned but super vague answers to your question, such as "watch videos on khan academy" or "read newspapers."

These are Bad Answers and instead you just need to read and obey two books and two books only:

1) https://www.amazon.com/Bogleheads-Guide-Retirement-Planning/...

2)https://www.amazon.com/Bogleheads-Guide-Investing-Taylor-Lar...

If you do this, it will prevent you from being any more screwed than anyone else, regardless of market conditions. You will also not become flamboyantly rich overnight in the way that Crypto speculators do.

Read https://www.amazon.com/dp/B002QX44IS

The sibling comment's Mr. MM recommendation is better than nothing but not as good as a real book IMHO.