Ebook: Getting Started in Bonds

I picked up this book at the library hoping to learn a little more about bonds. Unfortunately, this book is poorly organized and doesn't spend enough time introducing the basics of bonds. It has some helpful pictures, but I couldn't make it past the first 50 pages before I gave up. I borrowed "All About Bonds, Bond Mutual Funds, and Bond ETFs, 3rd Edition" and this is much clearer to me.