Welcome newbie. As a beginner, my advice is to start slow, do your research, and never invest more than you can afford to lose. Stay updated on market trends, diversify your portfolio, and above all, hodl through the highs and lows. And remember, don't be swayed by FOMO or FUD – keep a level head and always trust your own judgment (and hope you're lucky). 
Developing knowledge is a basic thing that must be done, as time goes by it will become broader because you also have to learn how to manage finances, risk management, mentality and so on. There's no need to rush to master it all, doing it slowly is also a good thing, because nothing is instant in this space.You make an important point here regarding FOMO and FUD, yes that is something that must also be mastered. Because I also see that most of the beginners are also carried away by FOMO and it is not uncommon for them to be consumed by FUD. That's what we also have to learn about how we can avoid things like that, because it cannot be denied that it will have a bad impact if we get carried away with these two things.