books about software testing

README.md

@@ -55,3 +55,7 @@ It's [easy](https://github.com/vhf/free-programming-books/wiki/Contribution). Pl
 
 ### Interactive Programming Resources
 + Free interactive programming tutorials: [github](/free-programming-interactive-tutorials-en.md) or [site](http://resrc.io/list/217/programming-interactive-tutorials/)
+
+
+### Software Testing Books
++ [Free ebooks about software testing](https://github.com/ligurio/free-software-testing-books)