Any excerpt in the booklet is taken from the paper or the contribution it belongs, in order to share the researcher’s voice. All referenced papers are available for free in the internet for own consultation, in case audiences want to go deeper: think of specialistic audiences like graduate students, maybe looking for a different perspective or an up-to-date list of recent contributions.
As usual with services like these, more similar to consulting than publishing, the market will dictate how this series goes and the format of the updates to come. The Amazon infrastructure takes care of all the backend needed to make these circulate, and the occasional exposure from highly regarded communities like this will provide with valuable feedback, so thanks again.
Not a good use of $10 unless it is intended as a very very high level summary.