Just read through the notes once, have some kind of understanding about things...
Technical & General and met will probably be of most use.
After that, just do practice papers, learn the answers to questions...do them a million times till you recognise the answer to a particular question.
At the end of the day, you are trying to pass some exams which are not there to test you, they are there to fail you and for the CAA to make money.
So, jump through the hoops by the most effeceint and effective way and once you have the licence you will learn 100 times more from a good guy sitting to the left of you than from any manual.