Hi, I am 22 years old and currently studying in the Netherlands, my native language is Dutch, but I also know good English and good German. I have some students who are from Czech and want to learn some Czech, I red that Czech step by step from Lida Hola is a good method. I also noticed that the textbook part 1 is in English, but part 2 is fully in Czech. For the people who have both books, do you understand part 2 after working through Textbook 1? Or is it very difficult?