I ruined Skyrim for myself. I peered into its tangled innards and recklessly mucked with its data files and console commands, and the mystery and wonder all crumbled away. It's just a toy to me now... just a vast, majestic, hilarious toy which makes me giggle until I forget all about the fate of Skyrim and dragons or whatever the game is about. So clearly I don't regret my decision to tinker, but if you'd prefer to keep your experience pure, I've prepared a little video to show you what I've been up to.
Below are the console commands I use in the video. There are, of course, many more commands to play with, and you can find a good list at The Elder Scrolls Wiki. Remember that once you start down this path, it's nearly impossible to turn back. I suggest you get everything you want out of vanilla Skyrim before you start poking around in its guts.
- pushactoraway [actor ID] [value] - The actor ID is obtained by clicking on an NPC or creature. The value determines the force of the push. 10-20 is a strong nudge, and anything from 50-100 will fling them into the air...sometimes never to be seen again.
- TFC - Toggle freefly cam.
- player.placeatme [actor ID] - Spawns anything where you're standing. To retrieve the hex IDs of things you may want to spawn, try using help [search term, such as "cow"] 0. Use Page Up and Page Down to scroll through the results until you find the creature, item, or NPC you're looking for.
- killall - Kills everything in your immediate vicinity. Results are often hilarious.
- player.setav [property] [value] - Sets a skill or attribute to the desired amount. I used this to give myself a surplus of Magicka.
- psb - The "Populate Spell Book" command teaches your character every spell.