I could not make for iit this year, but i am planning for taking a drop.Tell me which institute I must prefer and what must be my material and strategy to surely crack iitjee next year with very good rank.

If you are nearby delhi then you can join VM classes otherwise you can go to kota and join bansal classes. Each coaching institute has vast study material that you don't have to worry to get.  

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Arpit-IITD