Fallout: New Vegas/Skill Books

Energy Weapons
The Nikola Tesla and You books improve the energy weapons skill.
 * 1) Located on the first floor of REPCONN Headquarters, located on a safe within the shipping department.

Science

 * 1) Complete ../That Lucky Old Sun/ by providing power to everyone.

Speech
Look for copies of Lying, Congressional Style.
 * 1) Located in the building Brooks Tumbleweed ranch, on the shelf on the second floor.  Must be stolen.

Survival
The Wasteland survival guide improves the survival skill.
 * 1) Located in the Savenger Platform.