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http://cloudfront.guildwars2.com/QRC/GW2_QRC_NA_Digital.jpg
Found a quick reference card on the GW2 official forums. Shows different key bindings as well as key commands and which weapons can be used by which professions.
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Oh yeah, I've seen that once before, but a lot of people may not know about it. I recommend copying and printing it out, as it makes for a handy guide.
Printing? I've got these all memorized! It's very similar in a lot of ways to GW1, as well as to other mmos, so it's not exactly the hardest thing to memorize. Also, helps if you're looking forward to the game though