I was asked by a few people for access to my slide deck and code samples, so here they are.
The walk though of Dependency Injection by hand and how to use Ninject was directly adapted from the documentation for Ninject written by the amazing Nate Kohari.
To learn more about the SOLID principals check out Robert "Uncle Bob" Martin's original white papers on the subject or pick up the book Agile Principals, Patterns and Practices in C#.
If you are interested in playing with an IoC container, here is the list I discussed last night:
I had a ton of fun last night, thanks for listening to me ramble.