Facebook Group Tools - Did you Know They Exist? #TipsTuesdays 24

So I am in the middle of a book launch (The Machine: Rise of the Gifted - still free LAST DAY), and one of the ways to promote our books is Facebook Groups, some of which have hundreds of thousands of members. Hence my choice of topic today.
Facebook Group Tools
Did You Know They Exist?Wittegen Press$4.99 FREE
Amazon
23 Feb
LAST DAYSo I downloaded a spreadsheet a couple of months ago which listed Facebook groups for promoting books, but there didn't seem to be very many on it, so I went searching...