Which youtuber is legit to learn from

I just started learning about cryptocurrencies and havent traded yet, but I want to start doing it with a demo account for the moment.

I just want to know the right people to learn from.
For people who have made it, learnt it and applied it, where do i start and who do i watch?

Im gonna be very honest I don’t want to spend money for a course and discover later that i’ve falled for a scam or discover that the person teaching is not legit.
I’d really appreciate if you would help me.