I'm sorry but the image you posted and the link you shared are a mixture of kabbalah and theosophy. Theosophy is a bastardization of eastern concepts designed to muddy and disinform western spiritual impulses. If you feel called to the kabbalistic side of what you are talking about, look for Israel Regardie, Poke Runyon, Eliphas Levi or even Aleister Crowley.
If you feel called to the other concepts (bodies, densities and all that), take a look at pure eastern spirituality. I'm afraid I can't guide you here, and you will find a ton of disinformation that has been disseminated here and in the east.
If you feel attracted to gnosticism itself, take a look at the apocriphal christian texts, Peter Novak as a starting point for more references.