RPM Guitar Method
- A complete self-study guitar course with books, videos and CDs on every aspect of guitar playing.
- http://guitarencyclopedia.com

Steve Kaufman
- Offers a range of books and audio-visual learning materials, mainly focussed on bluegrass and flat-picking techniques.
- http://www.firebottle.com/flatpik/

Guitarist's Forum
- Offers a range of books and audio-visual materials for guitarists seeking to improve their technique.
- http://www.gfmusic.com/

Guitar Consultant
- Instrumental guitar music, resource material and free guitar lessons.
- http://www.guitarconsultant.com/

Guitar Online
- Guitar courses online, via e-mail or CD-Rom. Videos, scores and tablatures, midifiles, online tuner and metronome.
- http://www.guitar-online.com/

LeTechnique
- Portable, quiet guitar practice device for improving right and left hand technique.
- http://www.letechnique.com/

You Can Play Guitar
- Offering a series of videos, tablature books and CDs by Scott Morris.
- http://www.guitartabbooks.com/

Guitar College, Inc.
- It sells a package of courses with audio cassette or CD and a workbook: for jazz, country, blues and finger style.
- http://www.guitarcollege.com/

JustEnough: Guitar
- A learning kit using teen taught multimedia: video, book, CD, and CD-ROM.
- http://www.justenough.net/kits/guitar/

Find A Note Fretmarkers
- Decal set for the guitar fretboard.
- http://www.findanote.com/

LeWalt Publishing, Inc.
- Tabs, tapes, books and videos, from beginning to advanced level, for flatpicking and fingerstyle guitarists.
- http://www.lewalt.com/

Guitar Instruction and Performance Tips
- Joe Pacciano offers a series of lessons and play-a-long CDs.
- http://www.joetheguitarman.com/

Guitar Chords
- A large and easy to read chord chart for guitar players.
- http://www.walrusproductions.com/guitarchords.html

Total Accuracy Guitar Workshops
- CDs, videos and MP3 backing tracks in a wide variety of styles. MP3 samples available.
- http://www.jamtrax.com/

Guitar Simplified
- Lesson book and a play-along video. For beginners.
- http://www.guitarsimplified.com/

Sycamore Series - Classical
- Details of a beginner's book, CD and the accompanying teacher's book. Includes catalog of over 40 ensemble titles covering a wide range of standards.
- http://www.sycamore-series.ndirect.co.uk/

Fastfingers
- A catalog of CDs, tapes and videos covering all guitar styles.
- http://www.fastfingers.demon.co.uk/

Doug Beaumier
- Pedal steel guitar instructional materials: audio tapes, books and tablature.
- http://www.dougbsteel.com/

Jim Sutton Institute of Guitar
- International correspondence guitar school. Jazz, blues, latin, country, all styles and levels of personalized studies available.
- http://www.guitar-jimsuttoninst.com/

Stefan Grossman's Guitar Workshop
- Comprehensive series of video, CDs and books in a wide variety of styles.
- http://www.guitarvideos.com/

Guitar Empire
- Offering a full line of instructional CDs and books on blues, metal, classical and shred. Mail order.
- http://www.guitarempire.com/

Meditative Guitar
- Meditative songs and lessons for the beginning guitarist.
- http://www.meditativeguitar.com/