The CATIA documentation have excelent tutorials with part files for each function in every workbench. That's a good start. Free CATIA tutorials are hard to come by on the internet. I'm a proficient with many CATIA workbenches so feel free to ask questions. However, since thereare noCATIA tutorials here yet, I would like to make and post CATIA tutorials on this site in the weeks to come. But I make no promises.