https://www.packtpub.com/application-development/learning-d
I did not know it was out, but I bought a copy today, and it is quite a resource. It looks like it covers a lot of topics for which the documentation isn't helpful (at least to me) or nonexistent.
"D Web Development" can also be preordered at half price: https://www.packtpub.com/web-development/d-web-development
