some useful sites about gnuplot

A collection of useful websites about gnuplot.....
1) http://www.gnuplot.info/demo_canvas/
provides a lot of demonstration of using gnuplot with the LATEST gnuplot version

2) http://physicspmb.ukzn.ac.za/index.php/Gnuplot_tutorial
provides a simple tutorial for start-up

3) http://t16web.lanl.gov/Kawano/gnuplot/intro/basic-e.html
also provides some examples but in version 4.0

4) http://www.phyast.pitt.edu/~zov1/gnuplot/html/index.html