Yea, I knew it would be "as clear as mud" LOL! That's why I crave a video tut on how to do it. I'm an old dog trying to learn new tricks. I need a step by step way to adding textures to my models and then exporting into flight sim. Doug, you're right on target and my frustration(?) comes from the myriad of videos on how to texture a model, but nothing (yet) specifically for FSX / P3D. I can already build them really good AND I have successfully exported them also into FSX / P3D4&5 using Blender 2.79, but again, I'm trying to learn Blender 2.8 / 2.9. The "devils" in the details "they" always say, and texturing is where the models come to life. Any chance to improve on that is a bonus!
As far as how I "used" to do it, was simply UV mapping onto the model in Blender then exporting it. I used to use Paint Shop Pro, now Photoshop. I have not "baked", (wasn't sure what that was until recently), nor have I done anything other than apply the texture to the model in UV Mapping then exporting. They always came out pretty good (in my opinion) and some of them are very detailed with struts for rafters (using alpha channels to show ONLY the rafters...) etc. I know the world is evolving, and I want to evolve with it. (Speaking of that, is there any advantage to PBR on buildings / hangars?)
I'll keep experimenting and learning. At my age, if I stop for awhile (several weeks) I tend to forget the simple stuff, so the complicated stuff is even more so. UV mapping was easy and straightforward once you get the hang of it. ALL of my models are unique and built from "scratch". I do not copy other buildings nor textures so I have a good understanding of Blender and Photoshop. Again, it's the new texturing techniques in Blender that have me stumped. I recently watched a "one minute to make rocks" tutorial. 2/3 of it was just the texturing!
TB2