I understand it's healthy to exercise in the morning but should it be done after or before having breakfast or a snack? Also, it seems pointless to shower before exercising so I guess that should be postponed until after the work out? And I guess this question doesn't matter but just in case, does it matter when a person uses the toilet the first time in the morning, should it be done right away? Thanks.
This depends a bit on the kind of exercises you do.
There is a little debate in the fitness community if exercising in the morning with or without prior breakfast has an effect on fat loss. The theory is that your glycogen levels are low and your body has to burn fat to compensate. However as far as I recall research could not show that this is true.
So back to the exercise, what definitely is true is that your glycogen levels are somewhat lower after sleeping. If your exercise is only a jog around the block for some minutes, this probably does not matter. If it is a full weightlifting routine or a prolonged cardio session (eg running for an hour) you will probably feel exhausted easily without a prior meal.
For the other actions: Go to the toilet when you need to, I would do that as first thing in the morning, as a full bladder doesn't feel good and you gain nothing by holding stuff in. Take the shower after your workouts, unless you want to annoy people.