So I've been learning to play the guitar for around 3 months now.
It's coming along well :)
I figured I'd plug Tuxguitar and a few sites/apps I've been using.
However what most users dont know is that a free (gratis) and open source equivalent called tuxguitar exists.
This will be very helpful when viewing the *.gp3, *.gp4 and other files that are available on various guitar tab sites.
(Or view those rumoured hundreds of thousands of tabs I'd heard are available on some peer2peer technologies ;) )
It is written in Java and is thus available on Windows, Linux, Solaris or any architecture with a JVM. Tuxguitar in the Ubuntu 8.04 repository has known sound issues on AMD64.. so you better get the latest version directly from the site.