Fingerstyle guitar is a style of guitar playing that can be very rewarding. Complete musical arrangements can be performed with a single guitar by using the fingers to play melody and harmony simultaneously. Here are links to articles in WalletCard.org regarding fingerstyle guitar.
Harmonic Tuning Exposed: Explains how using 5th and 7th fret harmonics is an incorrect way to tune adjacent strings.
Yamaha NTX700 Electric Acoustic Nylon String Guitar Review: Product review.