Don't Prepare to Get Rank in GATE..just study to acquire Computer Science Wonderful Logical Knowlegde...Rank would come itself... Make ur own strategy for preparation... Prepare in this order... Discrete Maths-->C,Data Structures & Algorithms-->Theory Of Automation-->Compiler Design-->Database Management System-->Digital Logic-->Computer Organisation & Architecture--->Operating System-->Computer Networks. Try each 20 Years PYQ by ur own & understand the concept..Go for any best Institute mostly made easy Test series...