Basically all you need for this terrain set is a bit of styrofoam, paint, sandpaper, a wide, flat brush and a saw, which you use to cut out the rocks. After cutting, be sure to sand any edges so that it looks a bit round, which is more natural looking.

I got the styrofoam at an art supply store. It wasn't that expensive, but you can get cheaper styrofoam just about anywhere...check any packaging.

The paint scheme, all hand painted, was:
1) Prime white(All acryllic paints)
2) base coat Nickel Azo Yellow
3) seal with matt finish spray
4) wash with Mars yellow
5) dry-brush with Yellow Oxide

Not a difficult project and it only took a couple of days. If anyone wants to know more, let me know.