I signed up for this about 3 weeks ago. You can get up to 5 free books per month. They will try to get you to donate or buy low priced package deals like 25 books for $5 or something. But this is different! They are highlighting 25 books on Race, Racism and History. From the email I received:
"This weeks' Editor's Picks Newsletter is going to be slightly different. Rather than showcase 12 new titles, we're highlighting 25 books on Race, Racism and History.
IMPORTANT: all 25 books are free for anyone and do NOT count towards a Standard's Member's 5 books/month allowance. As such you're welcome to download them all and/or forward this email to anyone that may appreciate these."
https://www.free-ebooks.net/book-list/race-racism-history