Auto download and extraction process

Hello community,

I have created a custom build based around music with skin, music addons, backgrounds.

My question is, where do I obtain info on making my build auto download when kodi starts?

I do not want to move into the program addon, because I can use services.py for that,

I want to add some python code, but I dont know where to begin.

I dont know if you guys remember tvmc, but right when you start kodi it starts auto downloading.
I want to implement something similar

I am too shabby with python, but I am unfamilair with xbmc modules.

Can someone hint in the rigth direction please?