Fallout: New Vegas

It's not cheating, you just heard it from a fellow wastlander.

Locations:

Good Springs:

• Doc Mitchell: The traits you select when first talking to Doc Mitchell will determine the weapon he will give you to start off with (so far I've gotten a 9mm Pistol and a Laser Pistol through different attempts). You can also find several other useful items in the Doc's house, such as stimpaks, extra weapons and ammo. Taking these items from this house doesn't lower your karma (unless it's labelled steal when you go to pick it up).

• Sunny Smiles: If you choose to talk to Sunny and let her teach you how to survive out in the Mojave Wastelands she will give you a varmint rifle (if you haven't already got one) and some ammo for it. She will also give you some caps if you continue the tutorial.

• Abandoned Shack: To the NNW of Yangtze Memorial (the giant white cross that you can see clearly from Good Springs Cemetery) is an Abandoned Shack. Inside the shack there is not many useful items but the shack itself makes a great place to store some of your stuff that you want to keep but won't be using for awhile. Just inside the door there is also a Reloading Bench and a Bed.

Black Mountain:

• Raul: Raul is being held prisoner in the Prison Building so you will either have to fight your way through a horde of Super Mutants and Nightkin at the front entrance or sneak through the back. At the back is a gate you can lock pick (locked - Hard), but if you don't have the lock pick skill high enough to do that you can use a glitch which I stumbled across accidentally. When walking along the outside of the back fence you will notice that there is a door on the other side of the fence leading into the Broadcast Building, 1st Floor on the other side of the fence. It appears that you would need to be on the other side of the fence to access it, but if you walk right up against the wire fence towards it the game will glitch and you will be able to enter the building through the fence. once inside the building just exit it again using the same door. Once outside you will find yourself on the inside of the fence. Crouch down and sneak up the stairs to the platform at the top. From here you can shoot down on the Mutants. They will be able to shoot up at you but they will not be able to reach you to use their melee weapons. Once the area is cleared you will be able to reach Raul. Once inside the Prison building you will find the door leading to Raul is locked. The terminal closest to the locked door will unlock it but it itself is locked (75 Science Skill Required). Entry 6 stored in the terminal nearest the entrance to outside contains the password for the locked terminal. The newly unlocked terminal will now unlock the door to Raul. Once you have talked to Raul and are ready to leave, save the game. Outside the door you will encounter at least two more Mutants. You can fight them off or simply sprint your way back to the Broadcast Building, 1st Floor. Enter through one door and exit out the other. Climb the stairs again and jump the fence.

• Weapons, Ammo and Aid: A spare key to unlock the door to the Broadcast Building, 2nd Floor is hidden beneath the stairs you used to get to the door.  Inside you are likely to find Tabitha, kill her and pick up the keys from her body. You can then use these keys to unlock the trunks in the Broadcast Building, 2nd Floor and the Storage Building. A special weapon Annabelle (missile launcher)  is also located in the Broadcast building second floor. 

          Inside the Storage Building hidden around the room is:

• 1 Missile launcher
• 3 Missiles
• 3 Bricks of C-4 (Behind the trunk at the NE end of the room, On top of the vending machine, Next to the desk at the SW end of the room). 
• 5 Frag Grenades 
• 1 Super Stimpak 
• Various Ammo

Scorpion Gulch:

• Missing Laser Pistol: The missing Brotherhood laser pistol is located in the center of Scorpion Gulch.

• Sarsparilla Star Cap: There is a Star Cap to be found in the inventory of the dead wastelander in the center of Scorpion Gulch.

 HELIOS One:

• Solar Plant or Energy Weapon?: Some say that HELIOS One converts into a weapon. I've found this to be true but I'm not sure how to complete the power up process in order to fire it.

Brewer's Beer Bootlegging:

• C-4, Grenades and Ammo: In the back room of the hut you can find:

• 2 Bricks of C-4 
• 1 Incendiary Grenade  
• 1 Pulse Grenade 
• 1 Pulse Mine  
• Various Ammo

Guardian Peak:

• C-4 Galore: Fast travel to Guardian Peak, go down the stairs and enter the cave directly in front of you. Just inside the cave you will find 7 Bricks of C-4 and a 9mm Pistol, on top and inside the wooden crate. Murklurks dwell deeper in the cave but you should have no trouble getting the C-4.

• NCR Survivor: If you travel just a bit deeper into the cave (cave location explained in C-4 Galore) you will find a NCR

The Devil's Throat:

• CZ57 Avenger: In the back of the truck at The Devil's Throat you can find:

• CZ57 Avenger (Minigun)
• 300 5mm Rounds
• Combat Armor, Reinforced
• Party Hat

Ruby Hill Mine: 

• Explosives: Scattered around the cave is:

• 2 Bricks of C-4
• 3 Incendiary Grenades
• 2 Plasma Grenades
• 1 Pulse Grenades
• 1 Pulse Mine

Silver Hill Mine:

• Explosives: Scattered around the cave is:

• 7 Bricks of C-4
• 4 Frag Grenades
• 5 Frag Mines
• 1 Pulse Grenades
• 4 Incendiary Grenades
• 2 Plasma Grenades
• 1 Pulse Mine

• Armor: You can find a Remants Power Helmet inside the back of the cave. Info DT 7, WG 5, Effects CHR -1, Rad. Res. +5. The Remants as far as I know are like the Brotherhood except evil. They have a bunker in between Silver Hill Mine and Ranger Station Foxtrot.

Middle of No Where:

• Dead Super Mutant: While wandering the mountains south of Jacobstown I found a dead Super Mutant and in it's inventory was:

• 18 .50 MG Rounds
• 3 Bricks of C-4
• 1 Fat Man
• 2 Incendiary Grenades
• 1 Stimpak

Dead Super Mutant Location

Companions:

Raul: A ghoul who is happy to join you as long as it means he is getting out of his prison.

• Location: See text under Black Mountain for location.

• Perks: While Raul is a companion, the condition of weapons and armor decays more slowly.

• Return Location: If you let Raul leave he will return to his shack (South of Nellis Air Force Base).

Veronica: A member of the Brotherhood who would rather be out in the wastelands exploring with you then being cooped up in her 'hole in the ground' as she calls it.

• Location: Veronica can be found wandering around the place at 188 Trading Post (shown on the map below).

• Perks: While Veronica is your companion you will be able to craft Workbench items through Veronica's Dialogue. You will also gain access to the Brotherhood HQ at Hidden Valley.

• Return Location: If you let Veronica leave she will return to 188 Trading Post.

Arcade Gannon: A member of the followers who doesn't fit in with them and would like to travel with you as long as you are helping people.

• Location: Arcade Gannon can be found in Old Mormon Fort - Freeside East Gate.

• Perks: N/A

• Return Location: N/A

Companion Locations

Weapons:

(for a more detailed location leave a comment and I will get back to you)

Apparel: 

• After becoming a member of the Brotherhood you will be able to wear/use Power Armor.

• If you ever manage to reach the Boomers front gate they will ask you to help them (even though they try to kill you when you first approach). If you decided to help them they will send you on some quests. Just before one of them they will give you the Rebreather (you will need a pressure cooker though). The Rebreather will allow you to breath underwater while wearing it.

• Upon entering the REPCONN Test Site from the NW head towards the rocket statue. From there turn to your SW and walk in that direction until you find the secret entrance to the REPCONN Basement. Once inside head down the hall towards the last room with the rocket viewing window. In there is a shelf in there with a Space Suit and Space Suit Helmet on it.

• You can find a Remants Power Helmet inside the back of the Silver Hill Mine. Info DT 7, WG 5, Effects CHR -1, Rad. Res. +5. The Remants as far as I know are like the Brotherhood except evil. They have a bunker in between Silver Hill Mine and Ranger Station Foxtrot.

Magazines:

Collectibles:

Sunset Sarsparilla Star Bottle Caps: 

While exploring the Mojave Wastelands you are bound to come across a drink called Sunset Sarsparilla; it's like Nuka-Cola in Fallout 3, although you can still find the odd Nuka Cola lying around still. Some of these bottles of Sunset Sarsparilla may contain rare Sunset Sarsparilla Star Bottle Caps that can be collected. Once enough of them are collected (I know it's more than 30) you can travel to Sunset Sarsparilla HQ and collect your reward from Festus the robot by talking to him. Festus is located just inside the main entrance against the left wall. After picking up your first Star Cap a man will start to follow you, although you probably won't see him. After awhile he will approach you and explain what Star Caps actually do. He will then walk away. You can either decide to let him go or kill him and take his 5 Star Caps (even though he tells you he no longer collects them, he does).

Star Cap Locations:

• Bitter Springs Recreation Area
• Jean Sky Diving
• Sloan 
• Scorpion Gulch 
• Horowitz Farmstead 
• Sniper's Nest 
• Silver Hill Mine 
• Old Nuclear Test Site Shack
• The Devil's Gullet 
• Bradley's Shack
• Cap Counterfitting Shack (2)

 Snow Globes: 

These are worthless collectibles unless you know the right place to sell them. Lucky for all of you I know just the spot. Mr House located in the Lucky 38, New Vegas will offer thousands to buy your Snow Globes.

Snow Globe Locations:

• Good Springs Cemetery - Goodsprings
• Hoover Dam Visitors Centre - Hoover Dam
• Jacobstown Lodge - Mt. Chareston
• Nellis Boomer Museum - Nellis AFB