The Amazon HTML Better Book Description Tool is an editing tool that allows KDP Authors to easily create great looking Amazon book descriptions with a few clicks of the button. (betterbooktools.com)
I did a webinar on better book descriptions (back cover blurbs) with Bryan Cohen (who I listen to a lot on his Sell More Books Show podcast) and another on «How to Get your First Ten Book Reviews». (storybookperfect.com)