There is really too much to include, so I will try to give the link's & information  that may get you where you want to go.

http://www.guitarworld.com

A good place to start. Nearly everything you'll need to know/learn, at a very high standard. Interview's, Lesson's, Transcription's from all  style's, for all grade's, along with adverts & the usual bit's & bob's.

http://www.clc.ie
Fine handcrafted guitar's from Ireland. Completely built by hand of material's of the highest quality. Option's from Chris' current line to realising your own design can be obtained with little difficulty.

http://www.cybozone.com/fg
An extensive site containing all thing's concerning custom guitar building.

http://www.rainbowproducts.co.uk
  Supplier's of guitar & bass part's. From body's & neck's to peg head's & scratch plate's. With a huge range to choose from, you'll be spoiled for choice.

roberto@brandonimusic.freeserve.co.uk
  Brandoni custom guitars, offer an excellent range of replacement bodies & necks, along with a full range of hardware parts. All at very competitive prices. 

http://www.totnesschoolofguitarmaking.co.uk
  A 12 week comprehensive course offering the chance to build any kind of guitar. This might be the way to go if you're a purist & just designing a custom is not enough.