Its not as visual as screen casts, but I would go for a podcast. When I have downtime or I am driving, this is my preferred learning medium.
Which podcasts are you listening for the purpose of learning?
My other method is to use the discover podcast feature. The Pocket casts app I use, has a discover option that lets me search for new podcasts by keyword. I think it just goes to one of the major podcast indices and pulls from there but I am not 100% sure.