Introduction to Molecular Visualization with RasMol (K+ Channel)
Molecular Visualization with Pymol (Calmodulin, Duocarmycin-bound DNA)
Molecular Visualization with Chimera (Hemoglobin, Rhodopsin)
pdbintro.pdf: PDB file format quick reference
PDB Sum: quick protein reference guide (oligerimization state, thermo/meso info, etc.)