You are not amateur you are intermidiate player and yes I totally agree with your point books are complicated i have tried reading a chess book but i gave up. And if you are finding something contradicting in books maybe it is an exception of the rules mentioned in the book.
and for not forgetting the stuff you read you should make shortnotes of what you study.Thats all I can say about the books,again this is only my opinion which i am putting forward.
About the books I havegone through(not studied) and I have are
1.Bobby Fischer teaches Chess-Its a horrible book I don't recommend studying this
2.My System-I found this book far away from my level but an intermediate can study this.
3. Amatuer to IM training methods and Ideas-Its an endgame book recommended by John Bartholomew
I hope this helps.

Hi,
the thing is i have several chess books right now and all of them seem too complicated, the author argue many logical moves, point out some things and principles and after 10 pages he is writting something which is contradictory with his own principles and rules described earlier. I understand that everything is depending of what is the position on the board, but the thing is, he is having some advanced concepts and an amateur player like me is just blind for his concept.
I have red several books and none of was finished because its just useless for my concept and sometime i am feeling that its even harming my play. Throuout the time some initial tips, principles and concept red out of books have remained with me but most of what i red simply dont make sense for me or i am forgeting it.
What books you have red and you are 1300-1500 rated player, an indeed helped in undertanding new stuff?
tnx.