The Battle for Wesnoth Forums

The wiki uses a lot of terminology that I'm unfamiliar with. It seems to assume I know anything at all about coding, which I dont. How do I read the file? I can view it but it is arcane to me. And what are tags, and how are they applied?

Where do you access the interface to add event triggers and such? I dont know how to do that, but I'm trying to help set up a scenario and I dont know where to start.