Useful Links

Calculators and Simulators

• Talent calculator
• WotLK character simulator and optimizer

Tools and Utilities

• Free keyboard macro program

Theorycraft and Mechanics

• How Armor & Armor Penetration Works
• Death Knight attack power modifiers for ability damage formulas

Tanking

• Defense Rating
• Threat generation
• Tank avoidance
• Damage reduction
• Resistance
• Tank defensive cooldowns management
• Spell hit calculation for different levels

Guides and Challenges

• Advanced Ulduar 25 Hardmode Guide
• Herald of the Titans and Argent Defender

Addons and Resources

• Main WeakAuras search site

Other

• Everything about Raid Rogue