I made this design because most of the designs had only one piece and the doors were not operational, this has 7 parts and a swinging door. I also made this so it could be scalable and so a Raspberry Pi or and Arduino could fit inside, you will need to scale it to fit those if you want to use it this way. I already fits a Pi Zero however the Pi is visible through the windows and gives itself away.
I styled this to resemble the Tardis from Dr Who
Teach yourself
YouTube can help you learn anything you need, use it
an eSun blue PLA
Do what ever you want with the colors I think they were many different colors in England