I wondered if there'll be a 2nd season? 3rd? 4th? 10th? Asimov's Foundation series is 7 books in total. I assumed that the Goyer's series will be based on the original trilogy --Foundation, Foundation and Empire & Second Foundation.
Each book is about 250+ pages (hardcover). The complete series, in chronological order:
Prelude to Foundation (1988)
Forward the Foundation (1993)
Foundation (1951)
Foundation and Empire (1952)
Second Foundation (1953)
Foundation's Edge (1982)
Foundation and Earth (1986)
Of course this series is a part of larger series that included the Galactic Empire, the Foundation and Robot series of books (18 books in total).
Check the timeline for the Robots, Empire & Foundation universe:
TimeLine for the Robots & Foundations Universe