Looking for advice from migration agents

Hello everybody!
I'm peruvian and am currently looking at different options to study in Australia (specifically in Perth) for a short period of time, 6 months to 1 year. I found a student's agent here in Peru, but I'm trying to gather as much information as I can. I was checking courses I found in some websites, like cheap courses, but everything seems confusing. I haven't taken an IELTS exam but I finished studying the Advance phase here in Peru, then took a course on English Teaching Methodology and have been working as an English teacher for two years. I also study at Uni, but I'm not interested in doing an exchange program since those seem to be complicated.
Anybody out there with advice please?

Cheers,