I would not advise trying to do more than one part of the mrcp at a time
mrcp part 1 tests knowledge
part 2 utilisation of knowledge
paces demostration of skills
take one  part at a time
if you attempt more than one it will complicate matters
where books are concerned
read a textbook like kumar and clark as your primary textbook
for revision of basic science use the book by easterbrook
use reference books like oxford textbook only for important topics ( reference not detailed reading )
use other resources like the web when needed and attend lectures when the opportunity arises
I have written a new book called keys to success in medicine
this consists of short notes on important topics for rapid revision
you can easily go through this several times before the exam and it is in  format that allows you to add your own points as required
I would recommend that you use this book as your primary notebook for revision
it will carry you through part 1 , part 2 and paces as important topics that occur in all 3 parts are covered