/vr/ - Retro Games

If you got nothing better to do, tell me about when and how you got into making maps for Doom.
Is it easy to get into? Could an amateur throw out a little map like E1M1 without much knowledge of mapping? In short, is the whole procedure very complicated?
Any guides you would recommend? Learning by doing? I really want to try this out, right now I'm more concerned about geometry, architecture and such, not about item placement.
I downloaded and took a quick look at the GZDoom builder, it's kinda deterring but I think this about any vidya tool I'm new at.

Also post some ingame maps or blueprints of those you've made, I always like looking at them.