I will say from my experience, I watched a lot of videos on YouTube channels before I had to go into bounty companies. I want to note that for a beginner you need to start with the security of wallets.
Security should be the very fundamentals that you learn before anything, and not exclusively for bounty campaigns. In fact if a bounty requires you to download anything I would advise that you download it in a separate virtual machine at the very least.
I also believed if you are not having the knowledge of wallets types, wallets security then better off from everything relating crypto field, not only bounties. Just go and learn basics before jump in to the crypto field.
Another thing I also believed if you're willing to participate bounty campaigns better to create a
special e-mail for bounties and also
never share your PRIVATE KEY with anyone.