Question

What book do you guys can suggest as
reference for differential equations?

Answer 1

Personally, I've never found a book that gives a fantastic explanation. Go to your maths teacher/tutor, get a basic understanding, then use Google to get your hands on as many practice questions as you possibly can.

Answer 2

(I'm not saying there isn't a good book out there, its just I am yet to have found it)

Answer 3

Tom apostol is probably the best book for any concept of calculus.