If you know which school you'll be attending, ask them which course materials they use, and get that. They may have an entire "kit" they want you to use. Else, the links custardpsc shows are good, and free online. There are many choices for ground school materials, textbooks, online courses, etc. They all cover the materials in those FAA publications. The FAA pubs lack a bit as far as organized "homework" guidance, such as chapter quizzes, etc.
I like this series, myself
https://www.asa2fly.com/Pilots-Manua...-P3693C13.aspx
https://www.asa2fly.com/Pilots-Manua...-P3599C13.aspx
This is good, too:
https://www.asa2fly.com/The-Complete...-P2339C12.aspx