This book was mentioned in a Spanish YouTube channel. I was trying to reach out the author of the video, but I had zero response. I am wondering if someone knows about this book, if so, where can I get a print version?
The author of the sefer is Rabbi Moshe Shatz. The sefer is called Maayan Moshe : Mavo L'Torat HaSod
There are several sites that you can use for buying it:
MySefer (currently out of stock)
The blurb says:
An introduction to understanding Kabbalah, based on the books Beyur Esser Sefirot (Rabbi Azriel of Gerona), and Derech Emunah (Rabbi Meir ben Gabbai).
R' Shatz has undertaken to no longer publish this sefer. In it's stead he released Tarshish Shoham Veyashfeh which is an updated and revised version.