Dear Samay, you haven't mentioned your highest qualification. If your highest qualification is 10+2, you should pass CA Foundation and then  you become eligible to register for CA Intermediate. For this you need to have 8 months of study period after rehistering for CA Intermediate.

However without going through this, there is a direct entry. If you are either a Graduate or a Post Graduate with atleast 55%, you can register diretly for CA Intermediate. Here you can register for CA Intermediate on Provisional Basis. 

ICAI conducts coaching classes. There are also institutiins which offer coaching for CA.