Hi canadian fishguy and welcome to our forums !
You might want to read the sticky article on tank cycling it will answer a lot of your questions.
The article is here ->
http://www.fishtankforums.com/5-fres...-aquarium.html
Ammonia is easily found at any pharmacy and most large grocery stores. Just avoid ammonia cleaning products which contain soap and other additives.
The ammonia method gives you a lot of control over the process and probably will speed things up a little. It is also something to do to kill the boredom of looking at an empty tank for 4 weeks or so
I would also add a wee bit of the shrimp (once) the decaying process will help establish the bacteria colonies which break down food and detritus.
Regards,
Jay