As you have asked about the steps for online registration for the internet banking of the Citibank, I am giving you information about it, check below for the details

You can register online for it
It is very easy to register for the Internet banking of the Citibank.
For that you can follow steps given below

Go to Citibank India website
Click on First time user

Then click on Self select now, the page open look like



Here you can follow the given instructions on the website

Here select your account type
Enter the required details

After that follow other steps mentioned on the website to register for the internet banking.