Hello Shrushti

If we talk as per section-

Drawing - Most NATA/JEE books are lacking in drawing examples of perspective drawing required for the exam. So, I would suggest you rather go to YouTube for reference. There are lot of videos that discuss various concepts like perspective and colour theory, etc. You can check them out here - Drawing Videos

Aptitude - this is something you can find in books like Arihant or RS Agarwal (Quantitative Ability). 

Maths - For maths its best to follow NCERT books, as the difficulty level is not that high.