how do i find a group for AC Story
gw2lfg.com is your best bet. Post a LFG and wait. Spam map chat while you wait. Expect a good 10 mins of waiting for a full group on non-daily event days.
whats you IGN, ill join your group^^
What you must learn in gw2 is to http://www.youtube.com/watch?v=6npO-NoOPOg
well have a group cant even get in something about an update
Finding groups to do story mode is generally hard, and thats not for AC, but every other dungeon has this issue
gw2lfg.com is a great site to find people and run some dungeons. But finding a friendly guild is the best option imo