From Wiki;
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Zen emphasizes experiential Wisdom in the attainment of enlightenment. As such, it de-emphasizes theoretical knowledge in favor of direct realization through meditation and dharma practice. The teachings of Zen include various sources of Mahāyāna thought, including the Prajñāpāramitā literature and the teachings of the Yogācāra and Tathāgatagarbha schools.
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In order to use any Reading tools, you must be able to empty your brain of mundane thing, and focus on the subject.
Zen is a very good tool in this, and if used right, it might both enlighten and make your life richer, because your ability to evaluate, and find the importance of life will increase, this mostly through meditation and self discovery.
You bought it, because it "spoke" to you there and then, how far you develop it is up to you, but I recommend the meditation
