Nice site m8, i have a few tips for increasing traffic...

• Make sure your meta tags are set right and have lots of keywords in them
• Link exchanges help send more traffic to your site aswell as helping your google rank
• Make more message like this on forums (that can help)
• Advertsing is a big step but can be very rewarding
• Also offer something other guitar sites dont, so users will come to you for that purpose.

feel free to add to my list anyone