[wp-hackers] WordPress Books

[Aero Maxx]

Are there any upto date WordPress Books, that cover the settings API and that!

I have a plugin that's a bit bloated in size for what it does and want
to streamline it and reduce the amount of code contained within it as
its the settings API, and the validation checks that I would say are
approx 70% of the code.

http://wordpress.org/extend/plugins/wp-realtime-sitemap/

Thanks
Daniel!