For Maths , Arihant series is the best according to me.First learn theory thoroughly from Arihant. Arihant illustrates every theory point with enough examples. So do them first the qns alongby the theory. Now once you feel you are thorough with theory do the exercise at the back. Dont look at the solutions unless u r not getting any idea or u r stuc... Once you feel confident, u can move to other books,if u have the time..