Charles Pooley and Ed LeBouthillier  have released a new book: Microlaunchers: Technology for a New Space Age (A Microlaunchers Series Book) (Volume 1)

A vision for a new space age based on small launch vehicles. An introduction to microlaunchers and microlaunchers technology with a general overview of rocket design and engineering but at a popular and student level. Written for those who have a basic understanding of high school algebra and physics.

See also Charles’s site,

Update: Ed says, “There’s currently a problem with the Kindle edition which I’m working with Amazon to resolve.” However, the ” The paperback looks perfect to me”.

Update 2: Ed now says the issue  with the Kindle edition has been fixed.