There is only 1 guide dedicated to Afghanistan. Lonely Planet published a guide in the past, but it now got integrated into their Central Asia guidebook. This means Odyssey is the only one left standing, and with an update in 2011, it remains the best choice.
Thoroughly researched and illustrated with 100+ colour photographs, this is a guide that makes you want to go to Afghanistan despite the difficulties. The practical information is there as well, but this should be assumed out of date.