As an editor, I know how authors struggle writing sex scenes. Fighting embarrassment, not wanting to reveal their own experience, or just general reticence hamper their ability to write believable sex scenes. This book is an account of how Gabaldon approaches a sex scene. Complete with examples from her work, she describes good sex, sex between characters of the same sex, and bad sex (rape or non-consensual sex).
It should be of help to anyone struggling with putting a sex scene or several in their books.