Before you invest in general, you need to assess yourself and classify what type of risk attitude you have when it comes to investing. In that way, you can evaluate what kind of investments you can manage or you can handle. If you're a risk seeker, crypto is a great space for you since it's highly volatile which makes it riskier than other investments. But even if you're not that of a risk taker but still wants to get into crypto, you can start by investing small amount so it won't affect you pretty much.
Studying the basics about Bitcoin is definitely needed. Like what is Bitcoin, its history, how it works, pros and cons, what to do and what to avoid and such... But aside from these technicalities, beginners should also know that investing in Bitcoin isn't something a get-rich-quick scheme. Even if you heard from others that they earn this amount of money from Bitcoin, it doesn't mean that everyone will also earn the same way that easy. If you're a beginner in this space, don't be fooled by those too-good-to-be-true stuff that others will say. It that way, you won't be left crying.