This article is a work in progress and is not meant to be give a comprehensive understanding of this topic area.
First let us establish that Kabbalah is not a book. Although there are many books on this topic, it is not a book in itself. It is more of a field of study, similar to science, to understand the universe, the Creator, the plan of salvation, and our relationship to all of it and each other.
If you haven't spent the last 10yrs studying Torah, you probably shouldn't even be considering this area of study.
If you are thinking to yourself that you can handle it, your pretty smart, then you should probably not be considering this area of study.
Study in this field is rooted in Torah. If you have your New Testament memorized, but do not understand the importance of being a Torah observant person, the context of these teachings will be confusing and will not make sense.
I am not saying these things to be overly arrogant or pious, although I do recognize that it appears that way, but out of concern for your spiritual well being and your place in the Olam Haba (World to Come).