It is an excellent series for anybody who wants to aim high in General or Academic IELTS. I would strongly recommend it as an ex-IELTS examiner of quite a few years. The most practical route these days for any student to take is to do some self-study and these books and audios will allow you to do that. So, go ahead and my full recommendation to the series and to the authors. Neville Stiles, PhD Linguistics