IELTS which module for Immig?

Hi, all,
I have an urgent question need your help. I am going to take IELTS test for immigration to Canada. But there are two modules: General Training Module, Academic Module, I am not sure which one I should take? It is said that General Training Module is easier than Academic Module. If for immigration purpose only, should General Training Module be OK? I am also want to go to College after immigrate, is it required to take Academic Module? Please advise,
Thanks alot!
lxx1077