“After a time I found that I could almost listen to the silence, which had a dimension all of its own. I started to attend to its strange and beautiful texture, which of course, it was impossible to express in words. I discovered that I felt at home and alive in the silence, which compelled me to enter my interior world... Without the distraction of constant conversation, the words on the page began to speak directly to my inner self. They were no long expressing ideas that were simply interesting intellectually, but were talking directly to my own yearning and perplexity.”

~ Karen Armstrong

Before studying anything else one has to study the Self. One has to study one's physical body, and one's subtle body and look within to the causal body. There is nothing else to study so no line of study is prescribed. Whatever may be useful according to place and time, and the type of literature which pleases you or seems to satisfy you, you can get help from them. It can come from any source, it makes no difference. The emphasis is the Self and the non-self. One has to study the Self so as to separate the non-self - one has to experience happiness so as to leave behind misery and unhappiness. One has to find what is useful to the True Self and make use of it and discard what is not useful to the True Self. These are the ways one can study.

~ Śāntānanda Sarasvatī