"The Symbolism of the Tarot" is chapter 5 in Ouspensky's book "A New Model Of The Universe" lifted out and published separate. Read the whole book to get the context, but that being said...
I recommend any of Ouspensky's work, especially "In Search of the Miraculous"...
If I were just starting to learn Tarot I wish I access to "The Process" of reading Tarot by Umbrae:
http://www.tarotforum.net/showthread.php?t=10772
The audio version at Tarot Garden or Tarot Connection is really good. It helped me immeasurably!
oh...almost forgot...I am currently reading: "Aleister Crowley and the Practice of the Magical Diary". The journaling practices it talks about are going to really help my Tarot studies.