Just a FYI, copies of the Mistress Abernathy's first books are VALUABLE as are firsts of Warren's book although most bdsm books aren't worth much used.
Definitely read the Loving Dominant. Although I read it many years after I began in the lifestyle, it is a great book and one that remains in my collection. Now if I could only get my own book published... LOL Publishers seem to shy away from our subject matter.