Check out you textbook's site!  Includes supplemental problems, all the labs and more.

http://www.chem.vt.edu/chem-ed/index.html  Wow, this site is great!  "The Chemistry Hypermedia Project".  Includes links to pages with info on all aspects of Analytical Chemistry and Instrumentation (Gen Chem pages also).  

http://www.chem.vt.edu/chem-ed/sep/gc/gc-det.html  This site contains information on GC and is actually part of the Chemistry Hypermedia Project mentioned above.

http://www.shu.ac.uk/schools/sci/chem/tutorials/  This site has tutorials in areas of Spectroscopy and Chromatography