Many books exist that are guides to academic writing for native speakers. There are also a number of non-native speakers. Of these, quite a few deal with the use of graphs, tables and other visuals. However, they normally explain how to insert or use these visuals to make your work more interesting and easy to understand. They do not usually explain how to write about these visual aids.
The primary purpose of this book is to help you with the Writing Task 1 of the IELTS Academic test. However, because it attemps to deal with the language required in a systematic way, you may find that much of the information it contains could be useful to you later during your studies, if you ever need to use graphs, tables or the like in your work. So perhaps you should not give the book away as soon as you have passed your IELTS.