MattyBart https://wiki.cosmoteer.net/index.php/Abh_mod/List_of_Ship_Parts
Always take a look at the example ship in the first post.
Turn on tutorial in the game's setting. You should get a bit more detailed description when selecting those parts.
Basically you need node "pumps" to first supply the supply corridors so they can transfer them further. The arrows show the direction of the flow. I just saved a bit of editing for the cross parts. To prevent backflow there's always a starting end. The straight part transfers to parts two tiles away and not directly in front. The pumps only supply supply parts. While the supply corridors supply everything defined so far (non-vanilla classification conform parts are not supported).
Plasma_distributor are for long range transfer meant to represent high power transfers. The plasma_distributor is the main part for long range transfer to plasma_distributor_nodes while the plasma_distributor_node is used to distribute to the local/supply parts. plasma_distributor_nodes also tranfer to other plasma_distributor_nodes. The distance is exactly 20 tiles.