[luckylion]

I find them valuable if you don't need to write code to experiment with but can just watch the video at the regular speed and get the concepts that you can then use in your project. Also allows for watching while you do other stuff on the side.

SymfonyCasts is an example where I like the videos. They aren't the typical YouTube style of "let me talk about random things for 5 minutes so I get this video over the 10 minute mark", they get pretty much straight to the point. They have a text version below, which also makes search easy, And you can click on any sentence in the text version to jump to the right position in the video. I found them very helpful when I started with Symfony, but haven't really watched any once I had a solid enough understanding to get work done and incrementally learn more things as I need them.