Welcome to MobileRead, csbower.
You'll definitely want to start here. Books that have been formatted by our own members..
Free books are also available from
www.feedbooks.com
www.manybooks.net
and others will chime in on different sites.
This thread from here is worth bookmarking..
https://www.mobileread.com/forums/showthread.php?t=63773
Free books are either public domain, or author will sometimes post freebies on Amazon.
Also, independent authors have free ones.