If you are determined to get Skinner’s information legally and in high quality (which is essential for the geometric diagrams to be accurate), follow this path:
For those interested in delving deeper into Sacred Geometry, a PDF version of Stephen Skinner's "Geometria Sagrada" can be found online. This book is a valuable resource for anyone looking to explore the fascinating world of Sacred Geometry. Geometria Sagrada Stephen Skinner.pdf