I'm hoping to acquire some books used or cheaply online somewhere. I want to get Atkins' 8th edition or 7th... Irodov's (in English)...a solid linear algebra book (know idea what's good) and a geometry revisited. Does anyone know a site where I can find these kind of books cheap or used? Preferably cheaper than Amazon. I know textbooks are expensive and this may be an impossibility... In general I just want an excellent Physical Chem book, Irodov's level physics, good linear algebra and a solid book in geometry from a less western perspective. Thank you for your time Edit: Does anyone know a goof Orgo book?