Reading books alone will not allow you to succeed.
try doing past papers, u may buy them from libraries, or online, there is a website www.onexamination.com , that allows u to do lots and lots of questions and measures ur performance and even tells u how likely u r to pass and wut areas u should on.
As for books,
1. MRCS Core Modules: Essential Revision Notes
2. MRCS System Modules (This will also help you prepare for the viva voce/oral component of Part 3 MRCS Intercollegiate).
3. MRCS Core Modules: MCQs and EMQs
4. Oxford Handbook of Clinical Medicine
For the critical care viva, I bought an anaesthetics viva book. It was reallyhelpful because it went back to basics on all the critical care physiology, which was something I found lacking in the surgical texts.
hi i suggest the following
mrcs core and systemic modules
mcq on systemic and core modules
applied basic sciences for basic surgical training by Rafftery
baord review seies patholgy and physiology