Free is a good price.

Everybody loves free stuff, right? Get your free ebooks!

https://www.microsoftvirtualacademy.com/ebooks

You’ll have to register, of course, and you’ll have to have an ereader of some sort that can display PDF, EPUB, and/or Mobi for Kindle formats (yes, your PC is an ereader).

I’m just sharing in case you have insomnia, too. Heh.

Lots of good MS Press stuff in there!