The Planet Crafter Wiki is a volunteer effort to provide more detailed information on the game, including its mechanics, tips and tricks, lore and more.

The Planet Crafter Wiki

The Planet Crafter, while not providing official modding support as of V0.4.014, already has a good number of mods available on Nexusmods:

The Planet Crafter on Nexusmods

Lastly, the games' Steam forums can be a valuable source of information:

The Planet Crafter discussions on Steam

And then, there's allways the games' home page:

The Planet Crafter Game

Also, there's a Discord:

The Miju Games Discord