D.J. Conway isn't the best choice, she's the only author you can find regarding Dragon Magick [not including some self publications online] many people don't site her as the most relable of sources because a lot of her work winds up sounding made up. she's considered a fluffy bunny by most, i've read Dancing with Dragons, only information i found helpful is the guided mediation, other than that, nothing really.
if Silvers willing to take you on, speak with him, but you should study with the dragons because eventually you'll need to follow your own path.
those two are good sources. word of advice when looking for information online type in 'magick' instead of 'magic' you'll get a lot less rpg sites that way.