Do registration & choice filling in due time.
Prepare a list of institutes & branches as per your order of preference.
Strikeout the names of the institutes & branches after filling the form so that you don’t get confused later on.
Check & recheck if you fill the form correctly & property.
Never fill the names of institutes & branches where you’re not at all interested .
Do not push Submit button till the last date.
At the time of document verification & admission keep the following documents .
1.Result sheets of JEE main & adv.
2.DOB certificate , ID proof document .
3.Class X & XII mark sheets & Pass certificates.
4.Transfer/ Migration / Character certificate issued by the institute last attended.
5.5-6 copies of photographs same as uploaded at the time of applying.
6.Medical certificate.
7.Income certificate if required.
8.Caste certificate if required.
9.Seat allotment letter.
10.Keep ready the floating, sliding forms .
Before going to document verification & admission go thoroughly the rules issued by JOSAA / IIT.
Best of luck.