I helped with something last summer: an attempt at creating a wikibook for D. At that time, my D skills were very bad, so I had to concentrate on learning D first before contributing to more lessons.
One thing that has always bothered me is, there aren't many good *free* ebooks for learning D.
Well, I'll try to continue what I had started less than a year ago. I'll probably make many mistakes while writing, so can you guys check on my progress once in a while?Thanks.