I will be hosting this again soon. I'm super excited to have a good introduction project to 3d modeling. The learning curve on CAD can be frustrating. Fortunately with TinkerCAD and now Cadoodle you can get practical things done pretty easily. I think even people who use professional level CAD should consider these for simpler designs. No reason to bust out all the CAD modeling workbenches / workspaces and constraint based modeling every time.