http://destinydb.info/ I take credit for exactly 0% of this. All credit to the site creators. I am merely sharing. Blown away by the ammount of content here. EDIT: As requested: SPOILERS at the link, so proceed with caution. EDIT #2: Thanks to @deemark for pointing out this link: http://www.destinydb.com/ which contains all the info in the other link as well as a subclass tree calculator.