I am looking for high-quality videos about building stuff in C#.

For now, I have watched the two (very good) following series:

1. Socket programming in C#: https://www.youtube.com/playlist?list=PLHLYG7mk_iQnUkCK3SvZVWghJ1Qts9WKn

2. Building a compiler in C#: https://www.youtube.com/playlist?list=PLRAdsfhKI4OWNOSfS7EUu5GRAVmze1t2y

Any suggestions?