Uncle Bob's videos are the classics of the genre. They explain the craft, methods and reasons with absolute clarity. They are a great source of knowledge and motivation to become a cleaner coder. They are entertaining, perfect for the beginners but they also have enough ideas interesting for experienced programmers.
The next sessions are dedicated to Design Patterns. We meet on the 13th of February to see episode 30 (https://cleancoders.com/episode/clean-code-episode-30/show). " In this episode we'll see the Semantic Analyzer, the Optimizer, the Generator, the Abstract Syntax Tree, and the code generating Visitors. And that means we've got a lot of code to look at... We'll also see how the discipline of Test Driven Development differs in certain larger projects"
This time the meetup is hosted and sponsored by Rohde & Schwarz (https://www.rohde-schwarz.com).