Warren Buffett's 5 key investing don'ts:
1. Don't let world events (like what's happening in Ukraine) affect your investing decisions....
2. Don't feel bad when stocks go down....
3. Don't think you have to be an expert to profit from stocks....
4. Don't go for the quick profit...
5. "Don't put your money into bitcoins for the long run."
"It's not a currency. It does not meet the test of a currency. I wouldn't be surprised if it's not around in 10 or 20 years. ... It is not a durable means of exchange. It's not a store of value. ... It's been a speculative—a very speculative—kind of Buck Rogers-type thing, and people buy and sell them because they hope they go up or down just like they did with tulip bulbs a long time ago." (read more at the link above)