Goodreads, Bookbub, multiple Facebook and email groups.
I’m on Goodreads, and I’m part of quite a few book groups on Facebook, the biggest being Words & Whimsy, and I participate in their monthly book battle reading challenge!
This one, Bookstagram, Goodreads, Story Graph, and a ton of Facebook groups
Goodreads, a ton of Facebook groups (Cozy Mystery Village, Bookmarked, Bookbundant, our library book club, and more).
I love bookstagram. It is where I find my next books to read!
Goodreads, Netgalley, several Facebook book groups
I have this platform and goodreads
Goodreads, many groups on Facebook, groups on MeWe, book clubs, this group, and so many others…
I am in bookstagram, an in person book club, and then a few virtual book club’s through Instagram and goodreads.
Book club and I am a steward of a Little Free Library
Booktube, bookstagram, booktok, book twitter; used to be in YA book club at library
Bookstagram and Booktok!!
I already subscribe to the newsletter. I participate in Goodreads, LibraryThing, I belong to a family book club, and BookishFirst!
The only book community I actively participate in is Goodreads.
I am on Bookstagram and also a part of two book clubs and some buddy reads 
I’m in several Goodreads book clubs, Book Bub, and Netgalley!
Book Bub, Bookstagram, more facebook groups than “friends” lol l, NetGalley, Goodreads & of course BookishFirst!
Let’s see, Goodreads, Library Thing, and a couple of YA and From and Ash Reddit forums.
Bookstagram, Facebook and of course here.