Skills can be reset in Age of Conan by holding Alt then clicking on the skill. A dialog will appear asking if you are sure and telling you the cost. The cost varies with how many points you have in the skill. [1]

1-148 Skill Points: Free

149-198 Skill Points: 20 Tin

199-398 Skill Points: 1 Silver

399-598 Skill Points: 50 Silver

599-Max Skill points: 2 Gold