University of Illinois
University of Illinois: Molecular Biology Cyberlab: Experiment 2: Gel Electrophoresis of Dna
A very good page that uses a Q&A format to describe the process of gel electrophoresis. Interactive in a rudimentary way.
The Franklin Institute
The Franklin Institute: Restriction Enzyme Cleavage
A great step by step site for how DNA is prepared and plated in the process of electrophoresis.
University of Utah
University of Utah: Learn Genetics: Colorful Electrophoresis
Make electrophoresis easy by following the steps of this relatively simple lab. Instead of using DNA, you will use food coloring which shows up very well in the gel.
University of Utah
University of Utah: Build a Gel Electrophoresis Chamber [Pdf]
Get step by step detailed directions for building your own gel electrophoresis chamber. The directions are very detailed and require quite a few parts. Websites to contact for the parts are listed in the document.