It would be ideal to create just one landing page for each book and possibly send them all to the same thank you / post-purchase page.
I'm thinking about structuring each landing page like this-ish: https://postimg.cc/image/m29rpa2il/ (quick mock-up), where they can
1. DL a couple of free chapters in a pdf (where the final page is a sales page that links back to the landing page with an offer.)
2. Pre-order / purchase the book.
Then include a 'fb like' option and / or an email sign-up to newsletter on the collective thank you / post-purchase page.
Thoughts about this strategy? Improvement suggestions?