The books section is a section where you will find many different books for your self study in PDF format. With that, I would like remember to you as my user that downloading material for free, in this case is not legal. And that I provide those links for people who is too young to work to purchase the material and also for self students who for any reasons are not able to purchase the original ones. But not to make money with it as I am not using it for any kind of benefits but to give people the opportunity to keep studing Japanese no matter what.
That said, I will try to fulfill everyone needs by uploading contents for all of the 5 JLPT levels.
Enjoy, respect and use the material for your own study.