I’m not aware of any books solely for Astarte and not as a member of a pantheon, the Goetia (Astaroth) or larger discussion myself.
She is linked to the Egyptian goddess Isis, also Sumerian Inanna, (caution: not everyone agrees with this) and you might be able to find something that’s only about those, as cults for the worship of these versions exist/ed more recently than the middle-ages version of Astaroth.
I think the author Enoch Petruchelly works with her and has some videos on his yt.
Qliphoth books are included in this directory of book threads: