I read the guidebooks. Often I will find myself reading up on a card and find a word or phrase that will jump out at me, something that didn't when I have drawn that card (and read up on it) before. I find this happens a lot with decks like Oracle of Shadow and Light, Oracle of the Shapeshifter, Heart of the Faerie, Enchanted Map, etc that have guidebooks that are in depth and have detailed card descriptions. With the Gods and Titans/Goddesses and Sirens I really enjoy the guidebooks and find myself on online quests looking for more information.
That said, I also try to look at the card and add my own twist to it. For the Wisdom of the House of Night deck I love the meanings, it is written as though you are getting advice from Nyx and I also add my thoughts about the card to the mix.