I was introduced to this site today:
http://dotinstall.com/lessons

It hosts a very large collection of short (<3 minutes each) instructional videos (in Japanese) on a wide range of programming languages and related topics. The tutorials seem to start from the complete basics so even complete programming beginners can follow along, and the videos I've watched so far seemed to all include captions as well. You can also optionally create an account to be able to keep track of your progress.

Ah, only four categories are captioned (the ones that say 字幕対応). Still not bad if you want to brush up on HTML, CSS, or JS.

I was planning to get my C skills up to scratch over the summer, so this is exactly what I need.

Thanks! That is awesome!

I'll add that http://www.codecademy.com is partially translated into Japanese, but it's
limited to the Javascript part. Anyone know any similar coding sites in Japanese?
Especially web development-related?

Cool stuff. I was looking into getting a Sakura VPS and there's 21 videos about it

Great find. Thanks heaps for sharing!