JEE Main paper 2 contains three parts one is the aptitude part which contain 50 questions of 200 marks this part required general awareness and analytical skills those students who have good reasoning skills generally don't have any problem in solving this type of questions and you can easily score good marks in this section the next action is mathematics which comprises of 30 questions which is similar to JEE Main paper 1 and the syllabus is same but one thing I would like to mention is that mathematics part will be little easier compared to the JEE Main paper 1 but the variation is very slight and you need to prepare in the same way as you do for JEE Main paper 1 the last part is trying test which consists of two questions for 70 marks it is also very simple and tasty or basic frying skills nothing to worry about JEE Main paper 2 if you are comfortable with aptitude and mathematics then you will going to do very well.there are many books out there for the preparation of aptitude for JEE Main paper 2 you can buy any one of them or else if you are good at it then there is no need care separate.

Hope this helps all the best.