The unending DYOR advice, yes that's #1
True, this is the advice all must put into mind.
1 Before investing, spend time learning about cryptocurrencies and blockchain in general
DYOR advice is a must for a person whether it is a beginner or a trader for a long time, we MUST DO OUR OWN RESEARCHES before investing
2 Dont look at it as get rich quick scheme, but as a long investment
Bitcoin will never be a quick rich scheme. Even nothing in cryptocurrency is an instant. Probably if you're lucky. For example before the big pump/before ath during 2018. You bought at December 2017, and that's your quick scheme.
3 Learn ways to keep your bitcoin safe and secure.
That's why we need to research about bitcoin wallet to avoid losing our bitcoins and our wallet.