We've received feedback that there's sometime not enough or too much information out there for learning how to extend Visual Studio. One of the ways we want to help is to start consolidating a lot of that information and have tutorials and easy starting points for new developers to our technology.
One of the more powerful and potentially intimidating areas is Domain Specific Languages (DSL). There's a lot of documentation out there, videos, and even a book written by four of our team members. However, it's hard to find a place online to start from scratch.
Take a look at the lab and let us know if it helped you learn DSLs.