Teheuti
I'm not clear what you want to know about astrology and tarot. If you want to understand the planets in signs then you'll need a good astrology book or website. Ask at the astrology thread here on aeclectic. There's no single system of correspondences between astrology and tarot - but, rather, at least three main systems and lots of variations within those. So, first you have to pick a system. If you want it to know how astrology relates to Qabala, that has it's own history and variations - google the "Sepher Yetzirah", which provides the basis for all later correspondences. If you are interested in the Golden Dawn system (Crowley-Harris Thoth deck and the Rider-Waite-Smith or BOTA decks) then the Chicken Qabalah of Rabbi Lamed Ben Clifford is a good place to start: http://www.amazon.com/Chicken-Qabalah-Rabbi-Lamed-Clifford/dp/1578632153I ordered the Penguin Dictionary of Symbols (along with the Morgan Greer ). I do find myself wanting to understand the astrological attribution more (how do Venus or Mercury influence things when visiting other signs). Every book I have so far is how astrology relates specifically to Tarot so Qabala is already in the mix, too. I'd like to pull those apart and look and them alone so I could better understand exactly how they've been blended together.
A great place to get information on all three items: symbolism, astrology and Qabalah as it relates to the BOTA deck (based on the Rider-Waite-Smith) is Paul Foster Case's: The Tarot: A Key to the Wisdom of the Ages. HIGHLY RECOMMENDED!