Hi! I'm relatively new to Hammer and I have a few questions. Several people recommended I take a look at this site. 1. Skyboxes are REALLY confusing me, I made one but it looked off so I want to know how to do it the right way. 2. How do you make stairs? Is it just cubes stacked on each other or is there an easier way? 3. Water (as in deep water you can swim in). My friend who is really good with Hammer can't even figure out how to make it. So how?