After 16th of june, u have to fill an offline counselling form through aieee rank only. This will give you a rugh estimate on what u can get. After that online counselling will be held from 30th and you have to go to ur stat's NIT for it. take 10th 12th marksheets migration certificate and tc along with u plus a dd of 15000.
the next day you can go there again to check what have ypu got
if u are ok with it. go for it otherwise there are always a second round of counselling but for 2nd round dont take ur application back,
if u have any query i am here.. cheers