Essential Grammar in Use with Answers and Interactive eBook: A Self-Study Reference and Practice Book for Elementary Learners of English – I am a big fan of Raymond Murphy’s English reference books. I highly recommend his books for beginner English learners.

English Grammar in Use Book with Answers: A Self-Study Reference and Practice Book for Intermediate Learners of English – This is a great book for intermediate learners (B1-B2) who want to test their knowledge of English grammar.

Advanced Grammar in Use with Answers: A Self-Study Reference and Practice Book for Advanced Learners of English – For learners who can converse in English with other English-speakers but need to learn more complex grammar to make them more fluent, I recommend this book by Matthew Hewings.

IELTS Prep Set: 2 Books + Online – After coaching so many students in IELTS I found that the best way to prepare for the exam is by doing a lot of practice! In this bundle you’ll get two books of prep plus online exercises.

TOEFL Prep Set: 2 Books + Online – TOEFL exam is also all about doing practice exams. In this book + audio bundle, you’ll get the right strategies to be successful in taking TOEFL.

IELTS Prep Plus 2019-2020: 6 Academic IELTS + 2 General Training IELTS + Audio + Online – This is a complete set for both Academic and General IELTS exams. Simply follow their advice and complete online exercises to prepare you for IELTS.

IELTS Speaking Increase Your Score to 8 – here you’ll discover strategies that will help you raise your IELTS speaking score to 8.

English Prepositions Explained by Seth Lindtstromberg – a comprehensive book on English prepositions and prepositional phrases. A must for anyone who is stuck on understanding use of prepositions. This book is also a great reference for ESOL teachers.

English Phrasal Verbs in Use Intermediate Book with Answers – this book will help you understand how to use phrasal verbs. It’s suitable for intermediate learners or learners who want to refresh their knowledge of phrasal verbs.