Hi Chris,
I'd have to agree. It is very important to know the species, especially for when they transform.
A simple set-up is easy...dechlorinated water, food, and air. I prefer a small gentle filter also. If your home is cold you may also need a small water heater. That would depend on the species.
If you use a filter you should cover the water intake with mesh or tulle if the tadpoles are very little.
I used aquarium gravel in my set-up to provide a place for good bacteria to thrive. Once cycled, they help to breakdown nitrates created by waste.
Have you ever owned fish or an aquarium? Try researching the nitrogen cycle of an aquarium. I can teach you more if you've never had one.
Back to tads...they will eat tadpole bites food found at the pet store, dried green seaweed strips also found at the pet store, and you can make boiled romaine lettuce for them (I froze mine into ice cubes to save them). The seaweed and lettuce provide them with vitamins and calcium.
Boiled romaine lettuce cubes...
Here is a pic of a simple set-up...
I looked up the site you posted. It is very informative. I think you will be able to identify the species with the information they provide.
Raising tadpoles is fun. It's neat to see them morph into frogs.