10 is the time you should build base for jee mains so for 10 read and practice RD sharma for maths and lot of numerical for physics and make your basic concepts clear along with that practice ntse paper from any books like Arihant etc and this is the time you should understand the pattern of questions and mindset of the competition which you are gonna step into.. so be hardworking , practice practice and practice and revise

It's good to ask this question at this stage itself. There are a lot of good books which you may prefer, but choose wisely as per your comfort and language

1. MS CHAUHAN
2. RC MUKHERJEE
3. JD LEE
4. INORGANIC NCERT
5. NCERT - PHYSICS
6. HC VERMA
7. RESNICK HALLIDAY
8. DC PANDEY
9. RD SHARMA OBJECTIVE
10. SL Lonie                                                                                                                                                                    Good Luck