@de Silentio,
de Silentio;140636 wrote:
Like Ding_an_Sich suggested, the best method is to find a teacher or knowledgeable friend and have ongoing discussions. If this is not available, secondary research is your next best option.
Another thing that helps me is to try to regurgitate the ideas on to paper. This helps you see what you are missing and forces you to investigate the ideas further.
Secondary sources can help understanding the text in question; however, it is often useful and necessary to compare several different sources because interpretations will vary. A useful and object review can always be found in Copleston.
One of the most brilliant teachers of philosophy I knew was found of saying "well, well, well, you have to make your own
notes." He made one class prepare a written outline of Kant's First Critique in lieu of a final exam. I have found this practice useful in understanding the text.