Looks pretty good to me. The only thing I noticed is in section 7 'Stringing Up and Intonation' it states '...(see "Truss Rod Adjustment" on the forum)...' but doesn't specify where that thread/post/section is etc. (I think it is actually embedded in the intonation section of Gav's How To without a separate title/post).
The other issue is, as Gav T mentioned, finding things on the forum and even within Gav B's How To, so maybe a stickied post with the title 'Quick Start links' or something like that which is locked (so only mods can post/alter it) and just has menu-style links to each section of the How To and other relevant threads/posts. And, speaking of links, rather that having long, ugly, and untidy looking URL's for links I would suggest naming the important links to match the name/title in the quick start guide, using this format:
Code:
[u r l=actual URL here]Nice tidy name for link[/url]
( ^ ^ without the spaces at the start)
ie. [u r l=http://www.pitbullguitars.com/?page_id=42&mingleforumaction=viewtopic&t=501.3#postid-17510]Adam's post[/url]
Which becomes this: Adam's post
And, please, please, please have someone fix that rogue RegEx (guess) that mangles any bolded text anytime the post gets edited or when you do a 'quote' reply and leaves that string of angle brackets, slashes and p's behind: '/<\\/p>[/<\\/p>[[ b ]]<\\/p>/]<\\/p>/'