They serve different purposes. Gray for beginners and foundational memorization; Pollack for advanced psychological depth. Many professionals own both.
However, you will find many unofficial PDFs floating around on sites like Archive.org, Scribd, or various occult forums. Many of these PDFs are either: a complete guide to the tarot eden gray pdf
Eden Gray's "A Complete Guide to the Tarot" is a thorough and accessible guide that covers the basics of tarot reading, as well as more advanced techniques. The book is divided into several sections, including: They serve different purposes