For newbie I think a centralized wallet is a good start, with a centralized wallet we don't need to be afraid of losing assets, because if we forget the password we can still reset it
Whereas in a private / decentralized wallet, if we lose our private key, our assets will not be able to return.
Centralized wallets are easier to learn and use. In addition, newbies will not need to bother with generating keywords. However, I do not recommend anyone to use such wallets for a long time.
Now on the Internet you can find a video or step-by-step instructions on how to create and use any wallet. This would be a good start for newbies.