In "Telepathy for Beginners" telepathy itself has been described - how to prove its existence and how it works.
"Telepathy for Advanced" is about how to gain a higher degree of reliability in telepathic perceptions and how to use them consciously in one's own life.
While in "Telepathy for Beginners" only general experiments have been presented, with which one can prove telepathy and understand its functioning, in this volume there are more extensive considerations as well as experiments and meditations, which make it possible to further develop one's own telepathic abilities and to see them in larger contexts.