You are free to share it to your friends/family/groups and public people via various platforms but you must keep the content and the .pdf file as the original version (not allow to change anything).
If you think the content/book is well worth the effort and deserve some karma money in return, feel free to make donation.
Weren't you selling these books for $10,000 a few weeks back? And your family weren't allowed to read it, they each had to fork out $10k for their own copy?
I know there are often discounts available at this time of year, but $10k to zero is quite a price drop.