Where can I learn to mod clusters properly?

[NewColours]

I've tried modding a cluster into the game while I'm learning.

The cluster exists, with one sector (and one zone, although I'm unclear what a zone is), it shows on the map although it is hard to get the positioning correct as I don't know how to unlock all current clusters to check for overlap nor how to see my current position for debugging.

My latest issue is that when I start a new game in that sector, my ship and the gate i added to the sector are 300,000km from the cluster.
I just cant figure out how all the positions relate to eachother (cluster, galaxy, zone, gamesetup, connections). I tried googling for rebirth tutorials on the subject but I haven't found anything useful. Where should I look, is there anything official?

I downloaded 'lost sectors' mod from rebirth to learn from, but it looks like everything changed