Recently there has been a lot of Hyper-V activity on the TechNet Wiki. One article that I think is particularly useful is the “Hyper-V: Gotchas” article:
This article currently has over 70 revisions and over a dozen contributors, and it lists the most common problems encountered and mistakes made by people who are new to Hyper-V. I would strongly recommend that anyone who is starting out with Hyper-V spend some time reading this article in detail.
And if you are an “old hand” at Hyper-V – check it out, and if you see something missing, add it!