"This is the best self-study grammar book, bar none. I use it with virtually all my private classes. The left-hand pages are explanations of certain points, and the right-hand pages are exercises practicing them. Simple, easy to use, and gets right to the point."
"This one is more for teachers. It's a reasonably easy-to-understand explanation of most of the finer points of English grammar. Ever wondered when to use present perfect and when to use past simple? This is the book for you. It's been my bedside companion since I started teaching."
"This is the elementary version of English Grammar in Use. If a student is just starting out, this is the book that will explain the most basic points to him. I know there's a bilingual (English/Spanish) edition, and possibly other languages."
"I couldn't leave this one out! I wrote this book because I've found that the normal way of teaching phrasal verbs is ineffective. Students often feel that phrasal verbs are the most difficult thing in English, mostly because they were never explained correctly. This book gives examples of 27 different phrasal verbs to get to understand the meanings, as well as practice exercises."