We start by thanking the people who created PreTeXt, the authoring and publishing system used to typeset these materials. We applaud you!
Beta testers and numerous learners reported (and continue to report) typos and other problems as they worked through ALAFF. We thank them for their patience and contributions.
This project was partially funded by a HornRaiser (crowd funding) campaign. We thank all who contributed for their generosity. Additional support came from the National Science Foundation (Award CSSI-2003921).