All of the basic chords of any musical key can be found using the Major scale, often associated with Do Ray Mi. If you are not familiar with this simple little teaching tool, check it out our page on the Major Scale.
Regardless, there are 12 Major keys, and 12 Minor keys. Following the circle of fifths, here is a guide to the basics of those keys.
Here is the Chord Selector. Pick a key to find the most common open chords in the provided keys.