There are some wonderful posters here that seem to give me just the right information that I need that I would love to "follow" or as some would say "stalk" and read their every post for plant info or just to see what's happening in their world. Is there some way to do that?

Sort of. You can go to their profile and click on "View posts made by so-and-so."

Bookmark that page and visit it when you want to see what's new from them.