Watch the Open Chord Voicings online guitar lesson by Bruce Arnold from Jazz Guitar for Beginners
Open chord voicings are the chords that many people call folk chords or first position chords becuase they are played on the first few frets of the guitar.
Most players learn these chords first whatever their preferred style of music happens to be. I will step you through the basic ones and I've also provided a chart of these open chords so that you can learn others.
While its important to know open chords as a beginning guitar player, you will soon discover that jazz players rarely use these types of chords.