Here is an easy 2-chord pattern that even beginners can learn to play right away. All it consists of is two chords — and I’ll keep it in the key of G to keep it simple — G and C. By playing the G chord in 2nd inversion (in other words, upside down) you can move to the C chord just by moving your thumb up one key and your little finger up one key, making it very simple to learn. Watch this 8-minute video and you’ll quickly get the idea: