Previewable on Google, "Ritual Magick : The Rites and Ceremonies of Hermetic Light" https://books.google.com/books?id=8sBaCAAAQBAJ is available as an ebook for six dollars (versus 30-40$). I don't typically go for Thelema, but it looks good?
A product of "Ordo Astri" it considers itself a companion book to Foundations of High Magick: The Magical Philosophy, which I understand to be a little more well known. (So, I might like to ask you of the latter if nothing else). It works from a somewhat more "nightside" approach that it identifies with Liber Samekh, but, as I would gather to be Thelemic, aims for more of a balance.