One thing that I have never learned in Second Life is TERRAFORMING or modfying the topography of the sim. Why? Because I never have a sim in Second Life. Now I have a sim in Kitely Open Sim with 100.000 prims limit. It is enough to house my whole students. I learned to edit the terrain today...oh my...it was so easy. I managed to build mountains, a lake, a river and an island in the middle of the lake. I feel like playing with a digital play-doh. :p