My end goal? I guess it's not really for me, it's for the kids, and it's a long-term goal because they're young, so it will be a while before they get a good hang of the process (plus look who's teaching them! ). But they love the game, they spend a lot of time on it, and I want them to start approaching it in a less passive way: instead of trying a bunch of mods, I want them to start adding the content they'd like to see. And I want them to start to learn programming. So that's ambitious, but I think that they can do it. And what better incentive than doing it to mod the game they love? Mew is 14 and he seems to be pretty good, I'm assuming he started young too...
So I'm thinking baby steps: learn java, go through the modding tutorials, start small with custom blocks and items, and then work their way up... and we'll see how it goes...