(Roland) Updates / Drivers / Librarian / Boss Tone Studio / Support / Product Manuals http://www.rolandus.com/products/details/1187/downloads

(Roland) GT-100 Parameter Guide
http://www.roland.com/support/article/?q=manuals&p=GT%2D100&id=62306818

(Roland) GT-100 Ver.2 MIDI Implementation
http://www.roland.com/support/article/?q=manuals&p=GT%2D100&id=62306812

(Roland) GT-100 Ver.2 Preset Patch List
http://www.roland.com/support/article/?q=manuals&p=GT%2D100&id=62306817

All sorts of otherlinks:
http://gitaar.startpagina.be/

Roland
http://www.rolandcorp.com.au/
http://www.rolandce.com
http://www.rolandus.com

Boss
http://www.bossus.com/
http://www.boss.info/global/

Boss Tone Studio
http://bosstonecentral.com/about/
https://www.youtube.com/watch?v=KoS4s7uE264

 

Line 6 AMPLIFi
https://www.youtube.com/watch?v=zj9zr3p79Mw AMPLIFi: Volume 1

https://www.youtube.com/watch?v=a8rXCSxY9bw AMPLIFi: Volume 2

https://www.youtube.com/watch?v=V7fUULoorJ0  AMPLIFi: Instant Guitar Tone Matching

https://www.youtube.com/watch?v=LA_PKerB1WA AMPLIFi Remote - The Ultimate Tone Editor

https://www.youtube.com/watch?v=uZaAw1M1iQs AMPLIFi: The Fastest, Easiest Way to Jam