fox-moon is a great site. it hard to find information in it since it's so solitary and not many practitioners give out information outside the clan.
i wrote a quick FAQ guide that might help you:
Dragon Magick is a form of high magic, and success really comes down to your own commitment. you need to be very good with meditation and astral projection if you are to work with dragons, but also be sure you know the basics to magic, like circle casting, energy work, protection. you also need to face your fears, dragons can tell your intent, if you wish to rule them or if you fear them, they will ignore you, or possibly attack you. keep in mind they're astral beings so if you've traveled to the astral and they attack you, physically, you'll be fine [might have trouble projecting for a while, and you'll probably feel numb after returning to your body, but other than that fine]
most of the information on Dragon Magick is passed down verbally, so you can't really find many books on the subject. D.J. Conway's pretty much all we've got. there's one you can buy online, but i can't remember the name right now. Conway isn't the greatest, but you should probably find a cheap copy of Dances with Dragons and read it. theirs maybe a chapter of good information in it, but people seem to source her as the creator of Dragon Magick, so you should read the book and form your own opinion. personally, i think she came up with the name, but working with dragon energies no. it's very personal and secretive, so you need to learn from the dragons. you could find some basic information, but past the riding the dragon ceremony the dragons reveal the rituals, spells, and tests, so there's not much written about it.