I have a copy of Captivated by Your Teachings, which was written by a Maronite priest for the Maronite Church here in the U.S. Overall it is pretty good, although there is certainly a strong dosage of Latinization contained therein. But it does a good job introducing one to the Maronite Divine Liturgy, Liturgy of the Hours, and spirituality. It’ll also give you a grasp of some of the basic terms used in the Maronite tradition. I’d use that as a starting point and the build on from there.
As far as Maronite spirituality is concern, seeing how the Maronites are a family within the West Syriac tradition, I would recommend reading books from the great Syriac spiritual masters.