Just always thing at least twice before doing any action with coins or your money which is equal in this business. And don't blindly trust to anyone. Not all here are scammers, but all scammers are here.
I agree, there is a lot of scam going on in name of crypto or other online money making methods. One of the most common method is putting fake screenshots or presenting oneself as guru and then selling courses or ebooks.
Some part of this is done in offline business as well but it is comparatively less.