Resting

Resting is used to heal in a safe place without the need to use Stimpaks or healing skills.

Fallout and Fallout 2
In Fallout and Fallout 2, you can rest in any place, as long as you're not in combat, using the Pip-Boy 2000 alarm clock function.

Fallout 3
Beds are used to heal completely by sleeping.

Free Locations

 * Arefu, In the last house, named the West Residence.
 * Inside the Jury Street Metro Station, initially guarded by 3 raiders.
 * At the Super Duper Mart, in the ladies room & near the pharmacy, initially guarded by 2 groups of raiders (one roaming, one local). Also expect some action when you fast travel to the location, just run inside if you are too damaged and sleep first.
 * With The Family in the Meresti Metro Station, upstairs. Watch out for the mines on the way in.
 * Just south of Dukov's Place, in the little raider camp. Initially guarded by 2 raiders. Some strong but stupid Mutants nearby. To defeat the Mutants: Try to lure one to you, watch out for his firepower, hide behind a pillar, use a Shishkebab to set him on fire, and eat away his health. If he tries to shoot at you, hide again, behind your pillar.

Hotels

 * Megaton, Moriarty's Saloon, Nova, 120 caps.
 * Rivet City, The Wheaterly Hotel, 120 caps.