Found some good resources with are worth reading.
CounterWatch (http://counterwatch.net/)
Furious Paul (http://www.furiouspaul.com/overwatch/)
Furious Paul is a great read, lots of good tips there.
https://www.youtube.com/watch?v=jc9ooqhzMZI
Thought I would dump this here in case it gets missed in the over thread, this is some interesting stuff, particularly for those of you who are fans of general Blizzard lore.