While they are things Goku learns on the Lookout, it’s all within the “fundamental basics” of Learning Ki he was taught, or is claimed to be by them as he learns it. The first was Popo demonstrating people who don’t have Ki can’t perceive Ki Use properly, causing them to see what is desired to be seen, the next from Goku is about Energy Sensory, in this case sending disturbances in the energy of the world around them when you can’t sense their Ki to maintain location knowledge, the last is clearing your mind, which is necessary to using and mastering Ki and on its own creates instinctive reactions. Such as when Goku after fighting all day finally gets
into the zone and instinctively acts after clearing his mind. “Clearing the Mind” within Ki also creates the intimidation effect Chappa felt within the Anime.