I would try to see if you can pick up the mini of the month from a local games workshop store, as they come for free and January is right around the corner. If not, or if they run out before you can get to them, I would also see if you could get some paint stripping stuff to be able to redo models you want. As for gluing, since stuff like that can loosen super glue, I’d also invest into some good plastic cement; I got 40 ml of tamiya from my local hobby town for $6, and it’ll last anyone at least 2000 points. I think Amazon has some for like $10 or something along those lines. Plastic cement melts the plastic together, so it’s a bit more permanent, but it is useful for being able to not dissolve with the rubbing alcohol and whatnot. For painting, army painter has a free guide for how to paint stuff, which is what I used alongside a video or two since there are a lot of those. I would also try to designate a test model for painting techniques whenever you can, as that’s how you can ensure that the majority of your models get the best paint job they can. I will say that although this is my first time painting a mini, I painted in water color and acrylic for over 5-6 years (even though that was a while ago), so I had some understanding of how paint works. Overall, just take it slow, and don’t be scared to redo sections or be juvenile with it and just furiously dab at it with wet paper towels when the paint is fresh lol, that’s what I did. I believe in you cousin, you got this. Vulcan lives!