HELP on when to POST, when to COMMENT

For starters, remember this maxim:

WHEN IN DOUBT,
POST !
Some are still uncertain when something should be a post or a comment. It is true that in order to locate comments one has to try to remember whether there were comments before or not. I know everyone is trying to put things in the best place. We're all learning what works best for this version of Book Buddies, including me.

When it's about a book, POST.When it's chit-chat, COMMENT.
Most of the time, it would be best to POST you thoughts. If it's something like Granita's OT (off-topic) post, she (as an occasional Book Buddy) will be able to find your responses best as COMMENTS under her post.

I hope this helps.