>INFORMATION & GUIDES
Latest patch: https://www.dota2.com/685/
New players: https://purgegamers.true.io/g/dota-2-guide/
Wiki: http://www.dota2.gamepedia.com/
Blog: http://blog.dota2.com/
Lore: http://dev.dota2.com/showthread.php?t=35923
Guides: http://steamcommunity.com/app/570/guides
Cosmetic simulator: http://d2armory.com/
Competitive Scene: http://wiki.teamliquid.net/dota2/Main_Page

>STATISTICS
Competitive DOTA 2 analysis: http://www.datdota.com/
DOTA 2 analysis: http://www.dotametrics.wordpress.com/
Personal statistics: http://www.dotabuff.com/
Personal statistics#2: http://yasp.co
Hero stats: http://www.devilesk.com/dota2/heroes/herodata/
Hero and DPS calculator: http://www.devilesk.com/dota2/apps/hero-calculator/

>NEWS & STREAMS
http://www.joindota.com/
http://www.gosugamers.net/
http://www.liquiddota.com/
livestreamer GUI: https://github.com/bastimeyer/livestreamer-twitch-gui

>BETTING
Cosmetic items: http://dota2lounge.com/