This book is devoted to the full endoscopic transforaminal approach, which is the beginning and basis of all spinal endoscopic interventions and was prepared digitally in Epub-3 format. It is planned to appeal to neurosurgeons and orthopedic surgeons who are new to or currently practicing endoscopic surgery. We gave wide coverage to endoscopic anatomy of the intervertebral foramen, the basis of a successful transforaminal intervention. All anatomical studies in the literature were reviewed and the anatomical structures that make up the intervertebral foramen were presented to the reader with endoscopic surgery videos. We hope that these videos will, to some extent, fill the lack of visual material in the field of endoscopic surgical anatomy. Preoperative planning is discussed under a separate chapter. Preoperative planning for different cases is clarified in detail and supported by rich radiology galleries. The basic stages of surgical intervention (spinal needle placement, discography, guiding rod and cannula placement) are presented to the reader with anatomical models combined with surgical videos. Lumbar disc herniations are discussed in separate groups as non-migrated, migrated and extraforaminal herniations. To that end, the videos of 22 surgeries performed on 19 patients were included in the book as the case studies. In these case studies, pre-operative and post-operative radiological examinations of patients are presented to the reader in the galleries. Operative videos were specially edited and enriched with operative X-Ray images to provide anatomical orientation of the reader. Another feature of the book is its format. The frequently used hard copy format prevents the authors from using sufficient visual material. Using excessive visual material especially in textbooks where radiological studies are predominant, breaks the connection between images and text and puts the reader in a challenging reading process. Current digital book formats, on the other hand, oblige the reader to constantly access the video over the internet and then return to the text. All visual material in Epub-3 format used in our book is embedded in the book. Thus, the reader can access any material in the text without an internet connection and without being distracted from the text and can watch the visual material on a full screen if desired. The Epub-3 format also makes it easier for the reader to navigate and search within the book. In addition, when the reader downloads the book, they have the opportunity to read it offline on their phone, tablet, or laptop whenever they desire. Detailed info and example videos: www.endotextbook.com www.endodiscectomy.com Key features: 56 Galleries 72 Videos (Anatomy, preoperative planning, needle/cannula placement, surgical technique) 22 operative videos from 19 cases 3-D Drawings Model videos combined with surgery EPUB-3 Format Single format for both android and IOS Contents: CHAPTER 1. HISTORY CHAPTER 2. NOMENCLATURE and DEFINITION CHAPTER 3. ENDOSCOPIC ANATOMY CHAPTER 4. PREOPERATIVE PLANNING CHAPTER 5. SURGICAL APPROACH CHAPTER 6. NON MIGRATED HERNIATIONS CHAPTER 7. FORAMINAL AND EXTRAFORAMINAL HERNİATIONS CHAPTER 8. MIGRATED HERNIATIONS CHAPTER 9. COMPLICATIONS REFERENCES