Book recommendation on Binary systems

[ChrisVer]

I am looking for books that explain the binary (stars or black holes or whatever) systems in a good (introductory if possible) and/or extensive way...
Thanks :)

 

[websterling]

https://www.amazon.com/dp/0521798000/?tag=pfamazon01-20 by R. W. Hilditch is generally considered to be a good, accessible general introduction.

It touches on neutron stars and pulsars but it might not be relativistic enough for you, though.