If you're curious, I shared all the numbers I could on a book I wrote for Apress several years ago (Beginning Ruby): http://beginningruby.org/what-ive-earned-an

If you're curious, I shared all the numbers I could on a book I wrote for Apress several years ago (Beginning Ruby): http://beginningruby.org/what-ive-earned-and-learned/ http://beginningruby.org/what-ive-earned-and-learned/