Metronome Online - http://www.metronomeonline.com

A metronome can seem like one of the most uninteresting things to buy when you start playing the guitar. If you think you might have bad timing then use this online metronome to help you with strumming, scales or finger exercises.

Chord Find - http://www.chordfind.com

Do you have some "tab" or "chord pro" music you've picked up off the net? then use this site to help you find the chords to the song. Nothing beats the help of a friend or teacher but this will get you on the right track.

Looking For Tab/Chords/Lyrics - http://www.google.com

Don't worry about sticking to one Tab site or having a list of Tab sites. Just type the name of the song you want into google and end with tab e.g. "teenage dirtbag tab" or "teenage dirtbag chords" or "teenage dirtbag lyrics". It's always worked for me and most tab sites have the same transcription anyway.

Tab Editing Software - http://www.guitar-pro.com - Guitar Pro is a multitrack tablature editor for guitar, banjo and bass. Besides writing scores, Guitar Pro is a complete tool for young and accomplished guitarists alike to progress, compose, or simply accompany themselves.

Tuition Site - http://www.hotfrets.com - I was impressed with this site, it uses "Macromedia Flash" files to present it's lessons. There are a few useful items in the "Cool Tools" menu.

Have a go at one of the Free Lessons "12-Bar Blues". It a little advanced but it's fun to play with.

The subscription to this site is bordering on pricey but if you've got some spare change and a thirst to learn the sign up.