If you know one, it's not too difficult to learn the other. There are differences, of course. What type of application is it? Is there complex scripting or anything else out of the ordinary?
There is a Vijeo tutorial .pdf file somewhere, but I would say using the help file when you get stuck is probably quicker. And of course there's this wonderful forum
Do a search for document #
35007035 03 12/2005 on the square D or telemechanique web sites for the tutorial.