bx-zone.com says :-
It’s good to rely on self-study and self-teaching but even after that sometimes, a need of a mentor is felt. I recommend that anytime you feel such a need you should strive to fulfill it by getting a mentor. When you’re preparing for IIT JEE exam then it may happen that you choose the way of self-study and rely on it with your 2 years of IIT JEE exam preparation but, I would suggest that there is the need of a mentor here too. You would think, if I am relying on self-study “who can I appoint as my mentor?”, isn’t it? The answer is simple, there are many reputed institutes in India which help you do amazing IIT JEE preparation, why not choose any one of them? But, how would you do it as you’re relying on self-study? The answer is pick the IIT JEE study material of those institutes to study and thus, you assign them as your mentor. One of the best institutes for iit jee prep is Aakash and students have listed a lot of Aakash study material in the used bookstore of bx-zone.com. Here is one of those fine listings in which the user is selling you Aakash physics study package solutions, but, wait a minute this listing is not only about aakash physics study material but it also provides you the material on Chemistry as well as Biology. You won’t get listing of Aakash chemistry module, physics module and biology module in the same place at such a cost, at a discount of 50% in the city of Bengaluru. All you have to do in order to buy them is hit the ‘contact owner’ button above.