Regarding Sex Magick, I already read some mile-stone books, such:
Modern Sex Magick (Donald Michale Craig)
Secrets of Modern Sex Magick (Frater UD)
A Manual of Sex Magick (Louis Culling)
Celtic Sex Magic (John Huges)
Sexual Sorcery (Jason Newcomb)
Magia Sexualis (Randolph Pascal Beverly)
Sexual Alchemy (Donald Tyson)
Demons of the Flesh (Nikolas and Zeena Schreck)
Ecstasy Through Tantra (Dr. John Mumford)
On practice, I have a three years experience in sex-magick partner-practice and sigil making and working with, getting some pretty results (manifestations) encountered.