I got the circular bands at Wal-mart. It's just like a rubber band except bigger.
As far as runnng shoes with more flexible uppers, I just meant that running shoes in general have a more flexible upper than other kinds of athletic shoes, such as cross trainers. I used to wear cross trainers for the lateral stability but then realized that the uppers were too stiff and contributed to the foot pain.
Here are more detailed descriptions of the exercises. I hope this helps. I, too, am very visual!
Exercise 1: Loop the band around something solid and heavy. I have one permanently hooked under a sit-up bench, so I don't have to lift the bench everytime to set up the exercise. Scoot back away from whatever object the band is looped to until the band is tight.
Sit on the floor. Loop the other end of the band around the top of your foot so that it's resting across your toes (or just below). Now flex your foot toward you. The other end of the band hooked around the heavy object provides resistance. The PT said start with 30 reps (pretty fast reps) and see how that goes. The front of your leg should become warm.
(This is just like the exercise in GS Legs with the ball, except it uses a band. I like the band better because it isolates the front of your leg better. With the ball, you use hip flexors and abs a lot.)
This is the most complicated exercise to set up because you HAVE to use some other object besides your own body to provide resistance.
If you have an exercise partner, they could hold the band and pull away from you for this exercise.
Exercise 2: Sit on the floor. Loop the band around the bottom of your foot so that it rests against the ball of your foot. Hold the other end in your hands like the reigns of a horse. You will then probably need to choke up on the band to provide enough resistance.
Point your toe down. Repeat however many times needed to create warmth in the muscle.
Exercise 3: Sit on the floor. Put your legs in a narrow V. Place the band around both feet so that it rests agains the outsides of your feet. Hold one foot still and flex the other one out to the side. If you don't have enough resistance, spread your feet further apart.
Good luck.
Laura