Last week, we had the author of TDD for a Shopping Website LiveProject. Friday at 11am Ranch time, Steven Solomon will be hosting a live TDD session just for us. See for the agenda and registration link
If you're at the point where you're just trying to get javac to run, then it's best to not set CLASSPATH to anything at all! It is not necessary to set it. Java will work fine with the default setting -- but setting CLASSPATH incorrectly will prevent it from doing anything.