kaziakhlas said:
Can anyone teach me online poker specially bankroll management and pre flop 1 to 1...I mean personally... Thanks in advance... God Bless you...
Andreas´s link is a good first step.
1 on 1 is personal coaching, no one will make this for free.
There are several base training courses out there (Raise your edge, and similar sites)
You have found CardsChat so use Google to find such gems but don´t expect more than basic stuff.
Good content is mostly behind a paywall.
Some good things can be found on Youtube (Raise your edge, PokerCode, CarrotCorner, Know your Poker) but you have to dig deep to find gems/pearls.