Good Morning:
I am a retired stock broker from the Boston Massachusetts USA area and have been using SketchUp for several years. To keep myself busy I have been designing and building Sheds, Cabanas and out buildings for a few years. I begin with an ad in Craigslist. Once a customer has contacted me and wants to proceed, I begin with a SketchUp design. After tweaking the design to satisfaction I sign a contract and begin precutting the lumber. For this I use SketchUp in a very linear design. Rafters, Joists, and sheathing.
Recently, however, I have purchased from Fine Woodworking two references. One a book (SketchUp guide for woodworkers by Timothy Killen and similar video's by Dave Richards. The video takes you through "how to set up the program, use drawing tools, navigate in a 3-D space, refine drawings, and create shop-ready plans." Like a Highboy. For me it's a lot of learning but at 66 I want to keep myself active and it's fun.
Finally, in the not to distant future, I am going to build a beautiful Post and Beam home in New Hampshire and will use SketchUp to design it. Referencing http://www.northernlightstimberframing.com/su/.

 I found SketchUcation referenced in the video by Dave Richards and glad he did.