To say there is a plethora of information on the Qabala out in the world is an understatement. Here are a few of the books I personally reference. The books by Ellen Cannon Reed and Aleister Crowley are the ones I reference the most.
The Goddess and the Tree by Ellen Cannon Reed, subsequently re-published together with The Witch’s Tarot into a single volume The Witches Qabala. The advantage of her books is that she has come at the Qabala from a Wiccan perspective, making room for the Goddess in the work.
Imagick by Ted Andrews
Modern Magick by Donald Michael Kraig