Add getting started section
These are docs generated by @samthursfield and @devcurmudgeon
I have only put them in the official docs so all of them are in one location and they do not bitrot.
Also as a starting point so we can iterate from here
Links to different things are missing but I will add them in a posterior MR
Fixes #103 (closed), #307 (closed), #308 (closed)
Edited by Javier Jardón