Universities in Melbourne - Australia

Hello Everyone

I am looking forward to apply for student visa in Australia - Melbourne. But, I am confused that in which university I should apply and will I get the visa for sure or not??

The reason I am confused, because I completed my graduation in 2012 and after that I have a gap of 1 year - trying for government exams. But, after 1 year I started working in private industry as a software developer. So, I am confused that after so long, will I get the student visa and in case, if I am eligible to apply, then in which university I should apply for my post-graduation.

Looking for some great suggestions.