I took a course on DesignLab, a platform for learning how to design as a hacker, and it was really good. Learned all the basics of how to MVP my own sites with some polish. www.trydesignlab.com
Just signed up for one of these too. Looks like exactly what the OP is looking for. I haven't taken the course yet, so I can't speak to how good it will be, but I like that their approach seems to be learn/build/critique cycles.