Learning Greek is like a tree. You learn the fundamental principles first (i.e., the trunk), before you get into the branches and leaves.
Throughout my years of study and teaching, I've relied on this visual aid to keep me on course. The principle holds true regardless of the activity. In lifting, you go from a broad perspective of understanding to the tiny intricacies of the science of strength training. Greek is the same way. Please don't rush into exegesis without a foundation in grammar.