practice photography as an artform

I’m back in the habit of taking artful pictures like I was back in college when I got my first digital camera. Maybe someday I’ll see about getting my better ones published.

and took so many pictures since, but not really artistic, just regular, though often beautiful, even poetic, photographs of places,people and objects.
Now I’d like to learn how to take really interesting photos, play with b/w, the macro function etc.