1. Introduction
2. F, G, and K-type stars
2.1. Method 1: Gyrochronology
2.2. Method 2: Chromospheric Activity
2.3. Method 3: X-Ray Emission
2.4. Lithium Depletion
2.5. Comparing Four Age Determination Methods
2.6. Which Age Should be Used?
2.7. FGK Type Star Summary
3. A Type Stars
3.1. Method: Isochrones in Log(g) - log(T_eff) Space
3.2. Other Methods for A Stars
4. Conclusions and Future Work