I'm pretty terrible at finding resources so I would honestly just youtube marathon it. If you've never touched UDK before I would suggest finding a video on the user interface as it can be really overwhelming at first. If you want to go a step further, I know Eat3D, Digital Tutors, and 3Dmotive all have awesome (premium)…
These assets are beautiful! Personally I would choose UDK over Unity. Unity has many advantages over UDK when it comes to developing an actual game, however for presenting a scene or a map, UDK will allow you to make everything look nicer. This is mainly because of the lighting and the kick ass material editor. There are…