A really useful resource for learning PDP-11
I found a really useful series of videos on youtube and I want to include links to them here for anyone who is interested. As far as I can tell they are a series of videos from 1977 produced as a training program by DEC for people who would be operating a PDP-11. I have listed the videos in order here:
There is a ton of useful information in these videos. Each video is between 15 and 30 minutes, so there's quite a lot of material, but it's worth the effort.