Nick from ASoft has released his combined Newbie WHS Developer Kit, collecting a whole range of different development resources together in one place.
What I tried to do is create 1 package with all kinds of tutorials by combining them and walking you through the different steps of setting up a development environment up until the release, but also by including on how to create help files, localize an add-in, test it, [and] release it.
Lots of work went into this, I encourage any budding developers to get over to Nick’s site and check out the kit.