You can do a filter on the YouTube search results for videos posted “that week, month, year” etc. I haven’t seen a lot of YouTube videos about development for MSFS. You may have to get connected with forums and discord servers. Ask questions and figure it out.
This group is promising. I’ve asked questions and got some help. [FS²] Flight Simulator Freelance Society. The #sdk-discussion channel in the MSFS Discord server is a good place to connect as well.