I recently purchased Unreal Tournament 3 Collectors Addition from Amazon for the purpose of learning UnrealEd.
I have to say that the program is amazing. Though difficult for me to get used to. It is difficult because the method for doing things in UnrealEd is very similar to 3D Studio Max and other more tradition CAD programs, something I have a little experience using. Coming from Maya it is a less intuitive experience, at least as far as navigating the different window panes.
Though I have only gotten into the first tutorial I am finding that the tutorial is clear and concise and the people doing the tutorials are sometimes humorous in their explanations. I recommend that anyone interested in UnrealEd buy the Collectors Edition just for the tutorial videos.