IELTS Listening Strategies

This book is well designed and written by an experienced native teacher from the USA who has been teaching IELTS for over 10 years. She really is the expert in training IELTS for students at each level. In this book, she will provide you all proven Formulas, Tips, Tricks, Strategies, Explanations, Structures, Listening Language, and Vocabulary to help you easily achieve an 8.0+ in the IELTS Listening, even if your listening is not excellent... 

Refreshed with a new design, Oxford Practice Grammar is a three-level English grammar practice series for the classroom or self-study. Its tried and trusted methodology provides clear explanations and lots of extra practice. Includes downloadable progress tests with each level.
Oxford Practice Grammar knows that students need different types of explanation and practice at each stage of their study. Basic provides lots of practice and short explanations; Intermediate gives you more detail with extended practice; Advanced gives challenging practice activities and in-depth explanations. Great for classroom or self-study.

The workbook has 6 full writing tests with their respective explanations at the end of every test.
PS: It's the Workbook; However, It possesses detailed explanations at the end of every test so that it reviews every concept regarding, specifically, the Writing section of the new SAT.

BBC 6 Minute English (2018)

Learn and practice useful English language for everyday situations with the BBC 6 Minute English. It’s your instruction manual for saying or doing something in English. Each programme is six minutes long and contains examples and explanations to help you improve your knowledge of the English language across a wide range of topics.

GRE Prep by Magoosh

• Hundreds of easy-to-follow tips, FAQs, GRE strategies, and a study schedule to get you ready for the big test.
• Thorough lessons on the Quantitative (math), Verbal, and Analytical Writing Assessment (AWA) categories of the GRE, accompanied by 130+ up-to-date practice questions and answer explanations created by our expert GRE tutors.
• Stats for each practice question, including its difficulty rating and the percent of students who typically answer it correctly, all based on data from our online prep.
• A full-length practice test prepared by our in-house experts with an answer key and detailed explanations.
• A chapter on the AWA with example prompts to help you practice your essays.