I'm starting grad school this fall for my PhD, and want to review material before I take my classes again. After talking to the department chair she was suggesting all students retake the undergrad core courses their first semester (Quantum, Statmecn/thermo, theo mech) so that they have a solid understanding. She said some students dont take it but its always better to. Well im only a year out of undergrad and I got A's in all my cores, and I still remember most of the material (I think?). So I'm wondering what I should review so I could take the grad level courses as soon as I start, thus completing my degree a little quicker and avoiding spending 3 months relearning the quantum I already know. My question mainly is: I don't have my books anymore (Well, sold my QM book, I have my thermo/stat one, and Theo Mech there was no book.) Whats a good book or site to review these subjects at the advanced undergrad level? Just to make sure I remember most of it, and still understand it. Also, anything good for nuclear or particle classes (undergrad level). Just want to make sure I'm up to speed.