I am a bit lost and fustrated

I love reading all of the books, I have being jumping from book to book. I did this to get as much accomplish before the first meetting so i would know what was being said.It is going to take me some time to finish all three books can i diffrent section of each book?
What I have read so far It all make sence to me how to put it together is another story. need some gidance please