Hi Kris, and welcome! Head for the Tutorials area, if you haven't already. There are lots of downloadable PDF tutorials and quick start guides. Give a couple of them a bash and see how you go. Working through a few tutorials will teach you a lot of basic skills that you can use again and again. If you've started on a map, feel free to create a thread in one of the WIP folders for advice and critique. If you're stuck with something, don't be shy to ask for help.

Looking forward to seeing your maps.