At the risk of simply whining, I'm tired of really poor players on my team so I want to post a website that is helpful with guides and talent calculators and hope it helps people get better.
http://www.heroesfire.com/
Tons of useful information if you're new and don't know what to do! Check it out, learn and win more. Additionally I'm going to shamelessly self-promote my team-fight Zagara guide. (Up vote it a couple more times so it loses the new guide tag /shameless-self-promotion) Played right you can rock siege damage, hero damage AND be clutch in team fights with Maw. Just be careful cause you have the effective health of tissue paper.
http://www.heroesfire.com/hots/guide...tle-zagara-177