http://www.halo3planet.com/halo-3-skull-locations/ is were I found them
Please visit the Gamespot game guide for Halo 3. There you will find all the locations of the Halo 3 skulls.
That will be to long. Look up a tutorial.
They are in secretive places. There are ones in Multiplayer and in Campaign. http://www.halo3planet.com/halo-3-skull-locations/ - this is a good site but you can search on youtube, they have good tutorials.
No
The first skull on halo 3 is a silver skull. Silver skulls do not award any achievements.
After finding a halo 3 skull, simply pick it up as you would any other weapon.
once you get a skull in halo 3 you can co to the campain options and turn it on different skulls do different things
13
You do not jump through rings to get the tilt skull in halo 3.
the fog skull takes away your radar. you find the skull on floodgate
There are not skulls in Halo 2! It's just Halo 3!