Now that you have decided to be a private pilot and started taking lessons, you need to study for the exams. Now there are many books that you can refer to but it can get overwhelming. I would recommend using a standard study guide like jeppessen pilot book. I used that to prepare for all of my training including private, instrument and commercial. The language is easy to understand and has interesting images which makes it much easier to visualize. Apart from that get yourself the following books/material:
- Sectional map for the area you will be flying. I used FAA sectional map.
- Airport facility directory (AFD). This would be very handy in flying but equally important while studying as it has lots of useful information.
- Question bank (I used Gleims)
- FAR/AIM (latest publication based on year)
You may additionally purchase videos from kings school or sporty's which helps a lot.
There is no shortcut to studying. You may think why not study the question bank and clear the exam, its like you know how to drive but you will not know the rules. Hence I would recommend you to study the books thoroughly and then jump on to question bank.
If you consistently get 80-85% in sample test, then you are good to go for the exam. Just don't forget to take the endorsement from your instructor.
There are 2 patterns of exams given by different groups (lasergrade or CATS). Be sure which one is available in your school or wherever you plan to give and prepare your questions accordingly.
Good Luck......