Number 1 rule I can give is to avoid pump and dump groups at all costs. The gains are enticing, sure, but there isn't any certainty that you'd be able to get some profits before the whole group dumps on you. Next is avoid following your emotions when executing a trade. Many people have been burned by the recent crash due to poor decisions trigerred by their fear of losing it all in the process. Don't be that guy. Lastly, only invest what you can afford to lose. Crypto investment isn't a sure fire way to give you the millions you've always dreamed of. Those who got their millions on crypto are just extremely lucky to be at the right place at the right time.