Jain book depot is in cannaught place delhi. first of all I live in west delhi then there is little bit inconvience to me to go there nad it takes one hour to reach there and after reaching there I had to ask people about the jain book depot as it is not popular there but my friend got one of our textbook from there so I also went there but I do not get that book there so I have to fnally go to tilak nagar to buy the book I luckily get the book there.so I recommend before going there you can also search books in tilak .