szveronika 4 | 10 16 May 2011 #61I have bought a lot of books. Very good are from Universitas, but these are quite difficult. I have almost all and very good when I need to check something in the grammar.I also have the Teach Yourself one but I don't like it.After buying a lot of books and learning for 4-5 years now I can tell you that (for me) the best books is:Polish in 4 weeks.The name shows that this is a travel guide kind book, but not. Very detailed. The 2 books contain B1 level grammar and vocabulary. I am trying now to learn from A-Z because I prepare for B1 exam. Looks super.