SOFT is a very generous and sharing community. If you encounter any problems with any of the DAW software, you can always post here. I'm sure we'll do our best to help you.
As for a structured course, I'm sure there are some out there. In the end, nothing beats getting your hands-dirty - ie doing it, making mistakes, troubleshooting, looking up the manual, asking people etc.
First things first - which DAW software are you intending of using? And what and how do you intend to use it? (recording audio tracks, midi arrangements, live performance, post-production etc).