FOSS gamedev and creative worlds

Loads of these commands that dont seem to work or im typeing in wrong :S is there a command guide?

You'll find server commands and priviliges interesting links on http://wiki.minetest.com/wiki/Servers

Other commands are made possible by mods. To understand how to use them, read the first post under mod releases or modding general of those mods.

The /help command prints a list of all available commands, and /help <command> prints help for the specified command.

Don't forget "/grant singleplayer all" if you're playing alone.