Good luck on your GMAT journey.
Take a look at below link. It has all that you need to start/plan your studies:gmat-study-plan-how-to-start-your-gmat-prep-80727.html
Tough 700+ Level RCs: Passage1 | Passage2 | Passage3 | Passage4 | Passage5 | Passage6 | Passage7
Reading Comprehension notes: Click here
PowerScore CR Bible - Official Guide 13 Questions Set Mapped: Click here