Is there a book on sex magick that takes into consideration or is interpreted for modern society? As in it deals with many issues around today from feeling sexually inadequate to transgenderism?
I would recommend “Sex, Spirit, and Sorcery” by Jason Miller. It is tantra based, and is friendly to all (lots of techniques for working with your own energies, which will apply to everyone, regardless of sexual identity or gender).
Frater UD’s “Secrets of the German Sex Magicians” (also released under the title of “Western Sex Magick”) discusses polarity and how a magician needs to work with both the masculine and the feminine energies. I believe it also discusses transgender but I’m not sure. I don’t have my copy on hand to check.
Jason Newcomb’s “Sexual Sorcery” is also good.