Удобный интерактивный учебник английской грамматики от Anthony Hughes. Исключительно удобная навигация, все объяснения - на простом и понятном английском. Только правила, без упражнений.

It covers more grammar topics than the online version. You can view it on your desktop as an easy reference guide. It is easy to print any page from this version.You may feel as you were online. It has many examples to help you understand each topic. Most of the information is arranged in alphabetical order, another advantage and seach tool. It is a very  easy way for improving your English.