I think the most important crypto advice would be for newbies to gain enough knowledge about the market before they start making investments in this industry because cryptocurrencies aren't a get-rich-quick scheme and if they think this way about them, they are going to waste their money. They need to do enough research before they choose a cryptocurrency they want to invest their money in because, without research, you can't know whether a project has potential or not.
Most newbie investors these days invest their money in meme coins and newly launched altcoins without doing any research, they need to understand that cryptocurrency investments aren't supposed to be taken as gambling where you make a bet and try your luck to see whether you win it or not, if you do that, you are going to lose a lot of money.
This is the fact about newbies like me. From experience, I have been a victim of something like this, so, is better for us to not rush into investing in a particular coin because of the shallow knowledge gotten. Acquire enough knowledge. Do more research and don't just trust anyone you just met with your wallet and private keys I'm sure you know this. avoid trial error trading, this is not betting. Beware of scammers so don't be so greedy in investment.
It's not written on their forehead as a sign of scammers but they have some characteristics. Like trying to help you or showing you some fake online testimonies of people that they have helped. And a lot more of things like these which are all lies.