We have some here on 3DCADTips.com. Take a look at the following from our Tutorials > MCAD > Pro/ENGINEER > Pro/SHEETMETAL directory:

Creating Sheet Metal Wall
Creating Sheetmetal Bends (video)
Improved Form Features In Sheetmetal Design
Pro/engineer Tutorial - Sheet Metal
Pro/sheetmetal: Basic Creation
Start Models For Sheetmetal Design
Tutorial: Solid - Sheetmetal Conversion In Pro/e


Good Luck!
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