Concept: I am going to create a scene featuring procedural generation with zero money involved, and I will create tutorials at the same time. The software and the assets that I used are all free.
12/19/2017: I have finished my "procedural block". I have explained in the video.
12/20/2017: This is my Building, it's still work in progress.
12/21/2017: My procedural building is almost done. I have made a video explaining it. (See below.)
You can download my project file on my Github repository: