Stumbling through everything I know about how to make SRB2 maps in UDMF, and then figuring out how stuff I've never used before works, plus some info about level headers and arranging your map content into PK3 form. This is not a substitute for prerecorded tutorials, but it should give people something to work from for now.
To get Ultimate Zone Builder:
1. Go to https://git.do.srb2.org/STJr/Ultimate...
2. In the list of Assets, choose the installer for your system (probably the 64-bit one).
3. Download and install!
The editor is a work-in-progress. Report bugs with it at https://git.do.srb2.org/STJr/Ultimate...
Check the SRB2 Wiki for more info (or help update it). https://wiki.srb2.org
Still need help? Ask in the #udmf channel on the SRB2 Discord server. https://srb2.org/discord
Finished a map? Submit it to the Addons & More section of the SRB2 Message Board! https://mb.srb2.org/addons
Thought Snap the Sentinel looked cool? Check it out! https://snapgame.net
-- The other links --
Main channel / @seventhsentinel
Mastodon https://mastodon.online/@SeventhSentinel
Elon's dying website / seventhsentinel
Broadcasted on Twitch / seventhsentinel