1. I like books by А. Драгункин. You can see one of them here http://www.bolero.ru/books/9785793106313.html?terms=драгункин .
I suppose that it is the best way for learning English to understand it fast.

2. This book is good as well http://www.bolero.ru/product-50406740.html?terms=английский%20для%20наших . But remember, it is not for beginner level. The English Grammar becomes clearer after reading.

3. I heard it somewhere on Internet that “English grammar in use by Murphy R. is the best text book in the whole world!” I agree.

4. Practice, practice, as more as possible. Good luck.

Will you tell your achievements to us?