I can say that the best ones you will get will be the ones you least expect. Usually the good ones are known ones, the common and sounds like it makes sense but doesn't really go into detail and you know them even before you hear them but you just want more.

Things like "buy low, sell high" sounds like it is common logic, but there are people who saw bitcoin price at 7k and didn't buy as recently as just few months ago, they were afraid price would go down even more, and they failed to buy, or people who bought there but not selling right now for example. Long story short things you will get as advice will sound simple and they will be good as well, you do not need anything new or marginal to make a profit, or at least not as far as I know, do not look for secrets, go for the common sense ones.