I posted here a while ago asking for recommendations for a physics textbook in order for my mother and I to teach ourselves physics - thank you so much for all your help!!! - and after much internet research and discussion, we've narrowed it down basically to either: Fundamentals of Physics by David Halliday, Robert Resnick, Jearl Walker OR University Physics with Modern Physics by Hugh D. Young, Roger A. Freedman For every site/person I've found that recommends one, I find another recommending the other. I'd love to hear pros, cons, likes, and dislikes! (Re: MIT online thing - I did look into it and it does look promising, but it was eventually vetoed as a main guide due to the fact that here in rural Kentucky the internet and cable can go down for days or weeks at a time.) ALSO, we were looking at that site Cramster.com as a source of answers if we need more than just the book's own answer key. Has anyone here used it? It is worth signing up for? Is the free account enough, or is it really worth paying for whatever it is paid accounts get?