I'm new to making maps for Halo 2 and I have some questions. I suck at it but it is fun to make maps. I am really good at 3DS Max though.

How do I make lights? I need to what directory the lights are in so I can open it with Sapien.

How do I make my own textures? I want to make grass and rocky textures. Can I download grass textures anywhere?

How do I get water on my map?

I know that the one about textures is probably the most complicated of the three questions but I would like to know this stuff so I can make better maps!