As a person who is still new to RPG Maker (just bought MZ on December 25, 2021 and then the rest in January of 2022) and who has no programming experience whatsoever, my goals are probably different from the more experienced users who posted above. I still have less than 200 hours using MZ. But here goes.
#1 Learn as much about the default MZ engine/UI and what I can do with it as possible. I want to know (and remember) what everything in the UI does and how to use it correctly. I am older so the remembering part can be a challenge.
#2 Learn as much as I can about using Scripting to expand on what I can do with MZ.
#3 Learn as much as I can from the MZ Script Calls reference by experimenting and asking questions (please continue to be patient!).
#4 Learn to implement (by researching, experimenting, and asking questions) all of the primary features of what I would most like to have in any game that I create.
#5 Research and experiment will all the Plugins that I think I might want to use, if any (I just barely started trying Plugins this week). Ideally, I would like to understand what each Plugin is doing and whether I can achieve the same effect without it, in case of a future Plugin conflict or problem. I have only modded one game in the past (Morrowind) and that was rather addictive, but it also made me appreciate the problems with mod conflicts.
#6 Practice, Practice, Practice with making maps. I suck at that. I can sit down and a story will just flow out of me, but I can't visualize worth crap. I can't visualize what something is going to look like until I actually see it, which makes mapping a painstaking trial and error process. I am one of those people who looks at the foundation of a house, before it is framed with walls and thinks...geez this is tiny...until I actually see it finished and then I am like...wow...this is bigger than I thought. I don't do well with spatial things.
#7 Continue to make (hopefully helpful) tutorials for my YouTube channel about the things I have been able to do in MZ so new users (like me) are better able to find what they are looking for when they have questions. Generally, I think most of my tutorials are showing things where I didn't find an existing tutorial to do what I was experimenting with. But I could have missed older and better made tutorials.
#8 And finally, take all of the numerous game projects that I have started to test different things and merge what I want to keep into a cohesive skeleton of a game that I can actually play test with a fully fleshed out database of actors, classes, items, weapons, armor, enemies, etc.
And do all this around my full time job. Only about 5 more years until retirement...but whose counting.
I also realize that many of these goals are not necessarily measurable, so I can declare success at the end of the year by whatever standard I choose!
Good luck to everyone in achieving your goals.
Happy Holidays and Happy New Year!