Please suggest books

institute study material is best for CPT           

you can also register at cashiksha.com for lectures of CPT> IT WOULD BE HELPFUL

for reference book

Law : VK Publication

Stat. : SC Sharma

A/C, Econmices : ICAI Study Enough

u can also visit for gyan darshan channel for cpt lecture , (study material  is sufficient

Institute Modules are the Best

if u solve only the institute material you can sore more than 150...even i was a pcm student with only institutes material have f passed in the first attempt itself...if u can do join some good coaching but if u cant self study may also help....go ahead with whole hearted efforts and u will suceed