I found myself on Amazon the other day intending to buy Logo Design Love by David Airey.
David Airey is a Graphic Designer who specialises in brand identities, and works for many international clients all over the world, I regularly keep up to date with his blog updates, also including the Logo Design Love, and Identity Designed blog because I find all of his discussions very interesting and that they relate to my practice perfectly
Okay, I am sure you can guess, I went a little crazy and bought a few extra books too. I have not had a proper chance to look and read these properly as of yet, but I am quite looking forward to it. I have read many good reviews about The Brand Gap by Marty Neumeier.