Why are you just now wanting to learn Bitcoin, where have you been all this time, Bitcoin has almost been running for 14 years, but it's good if you want to learn it.
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I think the OP has known Bitcoin before now but has not fully known it or wants to learn about it than the average person out there. Besides, I see that he just want to learn about Bitcoin but to also use if for gambling; in his case he wants to player Poker..
Welcome to the forum OP, while you visit the suggested Bitcoin Poker sites, stay safe so you don't lose all your bitcoins

Yes, but unfortunately, he does not search for the detail of what he wants because if he does that, I am sure that he can get it and use bitcoin for gambling, plus how he needs to save his bitcoin in the other wallets.
I am sure he is a poker player who has skills playing poker games. I hope that he can get what he needs while staying at this forum to know many reputable gambling sites.