You don't say where you are based or how much time you have until the 11+. If you look at the forum for your county you will find more specific help and advice re which books to use. If you have years of prep ahead of you then a more general approach is a good start. If the exam is only a few months away then I would consider using practice papers as a tool to highlight which areas need specific tuition.
I tutored my DS for the Essex 11+ in around three and a half months. My prep would have been quite different if I'd had a year to play with. The most important thing is that you find out the exact format of the exam and buy/adapt materials accordingly. For example, I used the Bond books for Maths and VR but had to be really selective about their English books as they did not acurately mimic the Essex exam. Some counties use different VR type questions. Sometimes it is the answer format you need to watch out for - is it multiple choice or standard written answers?
Have a good old browse on your forum. I'm sure you'll find useful advice.
Thank you for the reply. We are in the Essex (Ilford) area, same as you. We still have 3 years to go but we want to start him early, slowly but steadily. This is why I was looking for ways to start him off on learning the methods instead of going through papers.
I will have a look at other forums but any additional assistance is always helpful