Hello aspirant,

JEE main is considered as  the toughest exam though if study. For it systmetically then it will be very easy for you. For preparation purpose you can buy Arihant last 40 year solved paper book for all the three subjects. For physics you can use concepts of physics by HC Verma and for chemistry and mathematics there are many books so go according to your choice and the one which is more comfortable to you.

Hope this helps 

If any queries feel free to ask

All the best!!

Regards