[SunilNagpal]

hello sir, 
1. plz can u suggest me there is need of gate bt coaching classes.if yes then which is best online or offline, suggest me some options or coaching names. 
because of im very poor in math im really get confused to joining coaching or not. 
plz give me answer fast becz batches almost started and till i have confusion. 
 2.and also suggest me some name of books lke arihant ...and all that . .etc.  for mcq studying
which is the best for studing

Coaching classes are never needed if you plan your preparation well. Coaching classes do nothing but add a routine to your life which is very easy to implement with some dedication.

GATE BT is not completely Maths oriented, you can skip on things which you are not comfortable with (focus on Matrices, Probability and Statistics).

Thoroughly study as many previous year papers as u can.

Please read other tips regarding GATE BT on this forum (search the forum) or at BiotechStudents.com