We won't sell you a book, whatever course you take or exam you study.
We do recommend investing in a good English dictionary (eg Oxford), a thesaurus and a collocation dictionary (a book most teachers are not aware of but which is invaluable for efficient learning).
Every student is provided with access to materials that are suitable to their level and their needs, which they can access in their own personalised area on this site.
If you enroll, we will send you a username and password so you can login.
Some materials are interactive, other materials are in the form of pdf documents that can be downloaded from your personal area.
Below are some sample materials.