A great guitar builder and teacher - Robert O'Brien at ObrienGuitars.com

 John Mayes Guitars -building guitars for Jars of Clay, Steven Curtis Chapman, and many other famous guitarists.
For ordering the Guitar Building DVD's and a great publisher go to Apprentice Publishing Luthiers Mercantile International (LMI) where you can purchase extra bearings.

For help with your guitar building visit the Official Luthiers Forum

Luthier Suppliers Supports the Guild of American Luthiers. Visit them here:
We Support Association of Stringed Instrument Artisans Luthier Supply - a supplier of 3D models of instruments such as Guitars, Mandolins, and Violins. Our products and engineering services enjoy the best of both worlds - a professional, production grade design at a modest price.
A very cool instrument that can be played by guitarists and banjoists - Banjolas.com