Also thoughts on Wayne Chandler?
The book combines historical fantasy and romance with New Age material. Its description of the "seven Hermetic laws of ancient Egypt" is simply taken from the Kybalion, which is not a Hermetic book despite frequently professing to be one. Instead, it is a book that exemplifies the New Thought movement, a New Age philosophy that emerged in the early 1900s. Please take a look at the following articles/podcasts for more details on the origins and evolution of the Kybalion as well as its relationships to hermeticism (or absence thereof):
One of the most popular and purchased Occult Books of the last 100 years, perhaps the most purchased Occult book ever- is The Kybalion. Purported to be the work of the Three Initiates and the transβ¦
whatmagicisthis.com
Is the Kybalion Really Hermetic?
What Chandler does differently in his book is to resituate the Kybalion's material in a real semi-classical setting as opposed to a purely mythical one by incorporating some (emphasis on "some") history and actual Hermetic material with the Kybalion's material. Even though it compares Poimandr's talk to Hermes Trismegistos, it instead uses Manly P. Hall's fantastical reworking of it, which adds a dragon and other elements.
No, it is not a suitable foundation for the study of Hermeticism, to address your query. For that sort of foundation, you'd want to turn to the actual texts themselves. For a fast and inexpensive start, I suggest purchasing these two books first:
Clement Salaman et al., "Way of Hermes" (contains the Corpus Hermeticum and the Definitions)
Clement Salaman, "Asclepius" (contains the Asclepius)
You will be well-positioned to learn about Hermetic philosophy, practices, beliefs, and the like if you purchase these two volumes (both are reasonably priced but high-quality modern translations of three distinct Hermetic works between them).
However, if you can, I'd also recommend getting:
Brian Copenhaver, "Hermetica" (Corpus Hermeticum and Asclepius)
M. David Litwa, "Hermetica II" (Stobaean Fragments and many other smaller texts)
A translation of the Nag Hammadi Codices, either the one edited by Meyer or by Robinson
Hans D. Betz, "The Greek Magical Papyri in Translation"
Marvin Meyer, "Ancient Christian Magic"
If you obtain them all, you will have excellent translations of all currently extant classical Hermetic texts as well as a sizable number of post-classical/medieval ones, along with a wealth of scholarly notes, introductions, and appendices for additional study and reflection.
For scholarly and secondary work, I'd also recommend:
Garth Fowden, "The Egyptian Hermes"
Christian Bull, "The Tradition of Hermes Trismegistus"
Kevin van Bladel, "The Arabic Hermes"
Anything by Wouter J. Hanegraaff, but especially "Hermetic Spirituality and the Historical Imagination"