I have watched some of Geek Gaming videos in the past. He does nice work.
I also like a channel called Terrain Tutor. He is just enjoyable to listen to as he does the hobby. A lot of his buildings and scatter terrain is geared toward WW1/WW2 historical wargaming. However, the techniques and the landscape works for most any setting with modifications.
I need to pick up some 1" and 2" foam board, flocking, and trees to do some scatter terrain at some point.