How do I clean Mold or MIldew in my shower?

There are some products like Tilex that work well, or you can make your own by mixing 2/3 water and 1/3 bleach in a spray bottle and apply liberally, then wipe away. A good way to prevent it is to buy a little squeegee wiper and remove most of the water on the walls after a shower. That way, mold/mildew will not easily return.