The Elder Scrolls V Skyrim – Is It OK to Kill Guards?

In order to talk to the innkeeper, you should get rid of your bounty. Then, you can deliver your quest.

I've found that if you attack some one and they survive the first hit, they some how telepathically tell the guards, at least in towns.

A "stealth kill" is really any situation where you one-hit kill someone and no-one sees.

This is normally done while sneaking as you will get the damage multipliers (i think its X2 for bows and X3 for melee without perks) which make it a lot easier to do.

It's 3x for bows, 6x for one handed, 15x for daggers, and 2x for anything else with the relevant perks (Deadly Aim, Backstab, Assassin's Blade)