Here you will find the various tutorials I have given on Thursday. I try to have everything here, but I do not make any promises. I give more details during the tutorials and you should always take notes. I use Mathematica to typeset the notes so I can double-check my math, but I can also present them properly. You can get the notes in various formats (Mathematica, Acrobat Reader PDF, and HTML). I recommend PDF, but you can get a Mathematica Notebook reader for your computer at the Mathematica web site. The HTML format is just there in case you can't use anything else, but it does look as good as PDF.
Chapter 3 I had prepared 3 problems from Chapter 3 and had enough time for half of two, really. The notes are not as commented as they could be, but they should help you go through the important steps. For problem 7, I had left a somewhat complicated expression on the board to avoid simplifying everything to 0 (because I did not think that is what they wanted). I do think that indeed, this is what they want so the full simplification is trivial, because every exponential becomes negligible. You can get the notes as a Mathematica notebook, a PDF or in HTML.
Chapter 4 I had prepared two problems (6 and 7), but only did problem 7 in class. You can get the notes as a Mathematica notebook, a PDF or in HTML.
Chapter 5 You can get the problem from Chapter 5 that I did in class (lattice of atoms with electrons) . You can get the notes as a Mathematica notebook, a PDF or in HTML.