I'm considering doing a series of videos and perhaps even a formal course on the ins and outs of designing and printing parts specifically for fine scale models. As some of you know, I've been doing this for a really long time now, and I have learned a few things.
The course would cover setting up and organizing your CAD project, dos and don'ts for modeling, best practices for exporting to stl, best practices for designing supports, orienting parts, calibrating your prints etc.
The elephant in the room of course is the cost of entry. While printers have dropped dramatically in price while the quality has skyrocketed, the same can't be said for CAD software. There are free options, but in my opinion they fall far short. The software I use does have a 90 day free trial, which should be long enough to complete the course and decide for yourself if the investment is worth it, or to adapt what you've learned to another package.