All these books are free to read: either they're distributed with a free license, or they're in the public domain.
Ani Adhikari and John DeNero
Andrew W. Neal (editor)
Lara Pauline Karpenko and Shalyn Rae Claggett, editors
Andrea Flynn et al.
Creative Commons Aotearoa New Zealand
Giovanni Ciotti and Hang Lin, editors
Sasha Costanza-Chock (Author) and Manuel Castells (author of introduction)