Sign-up sheet formula?

Hi! I've seen a sign-up sheet in a past event wherein by just entering the First name, it will automatically fill up the rest of the data needed (such as the last name and contact details).

I also wanted to do this for our event to have an easier registration process. I only have excel and no vba.

So I have a list of possible attendees in a worksheet. The headers are: First Name, Last Name, Cellphone Number, and Email address.

What I want to happen is for excel to automatically find the rest of the data (last name cellphone number and email) by just the attendee entering his first name.

Warning: I'm not very familiar with excel yet and its terminologies so a step by step process will be much appreciated.

THANK YOU THANK YOU THANK YOU to anyone and everyone!

√ Kirsten