Angelic Sigils of Power-Tristan Whitespire

Has anyone read this book and performed a ritual? I could very well be over tired, but I am having trouble understanding what the name of the decan is when asked to say it during a ritual. Also, at the end of the ritual, it says to chant the Divine Names. I am just not seeing it shown clearly. This book isnt as "user friendly" as others I have read. Any help is appreciated. Thanks in advance!