Kant had three critiques, they are pointed productions to three problems Kant was questioned: what is, what ought to be, and what to expect. To sum up, Kant was contemplating the problem of "what man is".

I formed my understanding of Kant's transcendental philosophy by reading articles and books written by American commentators, British commentators, and Chinese commentator Dang, Shiao Mong. As many amateur philosophy readers, a question is always lingering on their mind. Do I truly grasp what Kant's meaning? I have that doubt too, so I gave the question a dialectic argument. Regarding to learn by myself vs. to learn by taking a course of Kantian philosophy in university, the synthesis is to learn Kantian philosophy by getting a (some) university course's recording or/and reading articles/commentaries about Kantian philosophy. By doing so, the next dialectic argument is the learning policy I adopted can vs. cannot finishing the comprehension job. The synthesis is to add a verification policy of comprehension besides a learning policy. Now if a verification policy of comprehension is defined and is followed closely, the learning policy can continue.

A verification policy of comprehension I defined consists of two folds, on the one hand is to make extra efforts to compare commentaries on similar topics, on the other hand is to raise my own questions and try to find answers. The former is to exercise the law of contradiction. The later is to exercise my own rationality.

Robert Pippin did point out, to pursue the meaning of Kant's, or for that matter, to pursue any philosophical concept, we should look into what problems these philosophers were facing and were trying to solve. 

Upon clarified the process of "how to grasp", next is the question of how to "make out" the (or these) philosophical concepts/ideas is "to me." "To me" is a crucial thought. At the time I was studying Kant's, I noticed my thoughts were dwelling between "research mode" and "applicability mode". Research mode directed me toward comparison and verification, while "applicability mode directed me toward finding empirical evidence and the possibility of practice.  

Now, I am going to make a best practice: consciously aware of my two tendencies, "research mode" and "applicability mode". Separating them, and considering the causality between these two modes.