It's been awhile since I was able to really come up with a good tutorial for Orchestra Platform due to personal commitment (hint: I currently looking for a job). Behind the scene Orchestra Platform has been actively improved and patched. With only less than 2 month orchestra/foundation is now on v2.0.12.
It is important that bugfixes are tagged and release as frequent as possible to ensure that you can use Orchestra Platform without any breaking functionality, and I would advice future extension developer to do so. Feel free to read Using "dev-master" requirement for a live site a bad idea to why this is critical.
I have also posted the release Roadmap for 2.1 and welcome any suggestion or request to be consider for it.