I want to learn how to play poker professionally. I know there are special trainers for this. Should I pay attention to this possibility?

I must warn you right away that poker is a difficult logic game. It requires good nerves, good memory, and a lot of training time. I can advise you to use the online site at the very beginning - http://freebestslots.com/real-money-slots/ These online casinos have their own poker community and this can help you advance in your skill.