What do you need to know to play poker offline?

• Hello everybody!

I want to play, not only on the Internet.cguru:

I migrate to another country(to Poland, Warsaw, itself from Ukraine) Experience more than 6 years,
Prompt, What you need to know? What is important in the game offline?
What are the nuances that affect the game?

You need to know that it is much more difficult than playing online.
The game in live tournaments requires practice and self-control.