Does E10 certify all its authors as experts?
  All You Need To Know™

No, only If the book is a Certified Essential10 title. However, this doesn't mean that an E10 author doesn't possess expertise--only that such expertise is not yet recognized by the world at large! To see if an E10 book has what you're looking for, please read its reviews.

We believe the community of readers will ultimately determine experts through reviews and ratings.