Udemy offers Patrick O'Malley's Learn Guitar: Zero to Guitar Fingerpicking in 30 Days Online Course for $15. Coupon code "TIENDEO" cuts that to $10. That's tied with our mention from a week ago at $40 off and the lowest price we could find. It includes 2.5 hours of video and teaches you to play the most common guitar chords in a fingerpicking style.