I finished reading the book "Self Observation: the awakening of conscious an owner's manual" by Red Hawk. This book covers the work in basic terms and identifies key terms and is easy to read. Red Hawk ends each chapter with one of his poems which are a delight to read. The book is 149 pages and I recommend it as an addition to the other reading material or as a refresher to the material covered in Gurdjieff and Ouspensky.