if I go to coaching class for whole 1 year.is it possible to clear iit JEE main advance and main ??

There are some basics steps for you .Hope U like it :)
1) Grab the syllabus for jee
2) Mark the topics in a book, separate the topics depending on chapters.
3) Take a book for previous year asked questions.. On each question write the topic it belongs to.
4) Mark all these topics on your separated topics as important..
5) Start making notes on the topics and read the topics specially on which questions are asked previously . And after each topic, solve the questions related to that topic.
6) After completion of one chapter, read the chapter again and solve the same questions.
7) Once you get confidence, make short notes and then pick your practice material and solve questions.
8) Mark the questions which you're not getting and also mark those questions for which you're getting wrong ans..
9) Make a separate notebook for these marked questions..
10)) Read your notes once in a week and short notes daily..