LibertŽ is a first-year French college textbook, available for purchase or free download (CC BY-SA license).
This is the student edition, Vol 1, chapters 1-6, January 2024 revision, with answer key.
Please note that the printed version is in black-and-white.
For the accompanying audio files and information about the book and authors, go to http://www.lightandmatter.com/french.