As you may have seen from previous post, I need lots of help. Morrowind does not seem as intuitive as Oblivion or Skyrim.

I have bought a chitlin bow and arrows, as well as a knife. I can ready the knife with "F" and using the left mouse I can swing the knife.

However, when I ready the bow, I can see a box lower left with a bow, but the box for arrows is empty. How do I ready arrows and how do

I shoot?

Sorry, I know this sounds stupid, but I had no problem in the other games above. Any help appreciated.

You need to equip the arrows as well. Just drag/drop them onto your paper doll.
They will remain equipped until you un-equip them, or you run out of arrows of that type.