Death Knight: Class Portal
The purpose of this page is to serve as a collection of links to useful resources that are fully dedicated to getting the most out of your DK.
Max DPS - Great tool for organizing and sorting what gear you might want to work towards.
WoW Loot Tables for Death Knights - Make sure you know what boss drops what loot before you show up.
Death Knight Builds - Website dedicated to all things DK, not just talent builds.
Elitist Jerks - DK Discussions - Elitist Jerks is web forum for theory crafting and general thought/debate about classes. This link will take you to the entry point, pick the thread you need from there. Unlike the Blizzard Official forums, they don't allow just anyone to post so the 'noise' is kept to a minimum. This is the place to go for a 'deep dive' discussion of class mechanics.
Arena Junkies - If you like PvP at all, spend some time checking this site out. Great resource.