Music magazines / literature
Living Tradition
Folk Roots
Acoustic Guitar
Dirty Linen

On-line purchasing
MusicScotland
Compass Records
Culburnie Records
Greentrax Recordings
Stefan Grossman's Guitar Workshop

Some of my friends
John Renbourn
Dan Crary
Beppe Gambetta
Pierre Bensusan
Jeff Lang
Martin Simpson
Dick Gaughan
John Carlini
Altan
Isaac Guillory
John McSherry
Dónal O' Connor
LLan de Cubel
Shooglenifty
Paddy Keenan
Mairi MacInnes
Liz Carroll
Don Ross
John Jorgenson
Tommy Emmanuel
Bruce Molsky

Guitar makers
Chris Melville
Bill Kelday (see also his college site)
Fylde Guitars
Rich Mermer Jr.

Tony uses D'Addario guitar strings exclusively.