I have passed 11th recently so now I am thinking to join one of the best coaching centers for iit jee in my 12th because the previous institution in which I had joined has been shut down due to some of the business problems so please help me in joining the best institutions for iit jee.

HI DEAR

YOU CAN JOIN ASKIITIANS 1 YEAR ONLINE LEARNING PROGRAMME. I ASSURE YOU IT WILL BE VERY VERY HELPFUL TO YOU. JUST TRY A TRIAL ONCE FOR 1 WEEK. IT IS FREE TRIAL

FOR MORE DETAILS OF COURSE VISIT:

http://www.askiitians.com/package/one-year-classroom-program-for-jee-main-advanced-and-other-engineering-exams

dear karthik 
you can join any offline coaching center , that will be better . 

i am enlisting some of the better coaching center , that can be helpfull 
1- FIITJEE 
2- T.I.M.E 
3- BANSAL CLASSES 
4- resonance 
5- aakash institute . 
and in case you  want to join online programme , then look for meritnation , dronstudy , mystudycart . 
in case you have internet bandwidth more than 2 mbps then go with askiitians , else it will trouble you . 
REGARDS 
kindly approve