I found a great website called Cramster , it has so much many solved books in Chemistry, Physics , Engineering too and more, I'm using it in stead of downloading solution manual or this stuff those guys can tutor you somethings. I like it
This website used to be a paid one, but now they have both free and premium with so little differents. I just wanna share this with College students..
just enter and hit sign up then free or premium if u have the money :)