A Microcosm of the interactions in Open Source projects
Some background on how the xz backdoor situation arose.
503 days working full-time on FOSS: lessons learned
Rodrigo's history of working at Textualize, mention of the layoffs, and what he learned during the time.
Browse good first issues to start contributing to open source - The GitHub Blog
Github are doing more to make it easier to find good issues to get you into contributing to projects. I like this idea and should make a point of looking at the possible contributions of projects I make use of a lot.