How do you use the console commands for the PC?

press the " ~ " key (located the to left of the " 1 " Key)

then just type in the command...

NOTE: Console Commands are not cheat Codes, they are debugging tools left in by the developers to make testing mods easier.. using Console Commands without very clearly knowing what you are doing Can potentially harm your game.. User Discretion is advised

^ Hear hear. I once broke Oblivion because I typed 'tai' (Toggle AI) too many times and had to uninstall/reinstall it to play again. The console commands I usually use are TGM (Toggle God Mode), TM (Toggle Menu), player.placeatme/additem (spawns something around you/in your inventory), and TFC (Toggle Free Camera).

But be very careful with any command you use, as some can really harm your game.