i started creating tracker music in 2015, when i was 8. as obvious as it may be, my oldest stuff was SHIT. i used openmpt until 2019, then i shifted to fl studio, then ableton, then i shifted back to openmpt in 2023 and have since been using it alongside ableton.
from my experience, do NOT start with milkytracker. start with openmpt. it's got a far less confusing UI.
honestly, the best piece of advice i can give is to just experiment; figure out what you like best, then execute it in a way that you see fit. your first mods likely won't sound good at all, but don't let that discourage you! keep experimenting with it, and soon, you'll be making some pretty damn good modules.