Hello Wojtek. I would like to help you exercise your English .

Hi , it is a good idea to learn basic English grammar first. Go back to the first page of Italki & click onto learn the English language. Then you will see native English speakers & those who are learning English. Email anyone.Next click onto Italki Resources & Knowledge sections & complete the exercises you are given. Then click onto Groups & join the English Learning Group of your choice. It is hard for one person to teach someone else English, unless they are a qualified teacher of English as a Second language.