I use this software ,very good .I updated to Vegas 6c from v4 .I recently got a users guide for Vegas 6 in pdf format .It's 13mb and has nearly 400 pages .Check out the sony website ,that's where I got it from.
ps.
Just checked ,it's actually the sonymedia site and this is the list of manuals for free:
PDF Manuals
ACID 2.0 Manual
ACID 3.0 Manual
ACID 4.0 Manual
ACID Music Studio 5.0 Manual
ACID Music Studio 6.0 Manual
ACID Pro 5 Manual
ACID Pro 6 Manual
ACID XMC 6.0 Manual
CD Architect 5 Manual
Cinescore Manual
DVD Architect 1.0 Manual
DVD Architect 2.0 Manual
DVD Architect 3.0 Manual
DVD Architect Studio 2.0 Manual
DVD Architect Studio 3.0 Manual
Screenblast ACID 4.0 Manual
Screenblast Movie Studio 3.0 Manual
Screenblast Sound Forge 7.0 Manual
SIREN Jukebox 1.0 Manual
SIREN Jukebox 2.0 Manual
Sound Forge 4.5 Manual
Sound Forge 6.0 Manual
Sound Forge 7.0 Manual
Sound Forge 8.0 Manual
Sound Forge Audio Studio 7.0 Manual
Sound Forge Audio Studio 8.0 Manual
Sound Forge Studio 6.0 Manual
Sound Forge XP 4.5 Manual
Sound Forge XP Studio 5.0
Stream Anywhere Manual
Super Duper Music Looper 1.0 Manual
Super Duper Music Looper 2.0 Manual
Vegas 4.0 Manual
Vegas 5 Manual
Vegas 6 Manual
Vegas Audio 2.0 Manual
Vegas Movie Studio 4.0 Manual
Vegas Movie Studio 6.0 Manual
Vegas Pro 1.0 Manual
Vegas Video 2.0 Manual
Vegas Video 3.0 Manual
VideoFactory 1.0 Manual
VideoFactory 2.0 Manual
Viscosity Quick Start Manual