The approach o of a of verant, and specially mandukor penitial manduke, openishan is very concentrated. Because what you are expected to notice is already there. And once you notice it, the work is done. You know it for it's yours forever. As we study the manduk, it will suddenly dawn upon us what they are talking about.
Swami Sarvapriyananda teaches one of the shortest and most profound upanishads accompanied by Gaudapada's Karika. This lecture covers Mantra 1.