...I cant find out much info on the wireless flash system on canons, or what is required to carry out wireless photography with a Canon...
Welcome to the Camera Labs forum.
Wireless flash isn't something I have had personal experience with but my understanding is that the master unit, plugged into the flash hot-shoe can be a Canon ST-E2 Speedlite wireless remote transmitter. Then there is the Speedlite 580EX which can also act as a wireless master to compatible slave units. The Canon Brochure
I am sure there are cheaper options out there with third party manufacturers.
Apparently while a 580EX in the hotshoe can control one other 580EX an ST-E2 can control several flashes. I have also seen a report that some of the cheaper wireless controllers don't work with the 580EX so not going with the ST-E2 may be a false economy.