How do i begin this?

If you've watched the videos up to this challenge, you should know how to declare a variable. That happens like this

<access level> <type> <name>[ = <value>]; // you may skip what's inside the square brackets

Next thing you need to know is what camel-casing is. When you pick a name for your variable it may be consisted of more than one word. Since you can't use space you're forced to merge those words into a single one. In order to make everything easier to read and work with, every next word is with an upper case. For example if you had a variable that would store the first day of the week you may call it firstDay or firstDayOfWeek or whatever you want. Now how do you think you'll make the words first name into a singe variable?

I'm not going to give you the code needed to pass the challenge simply to make it hard for you. There's no use in copying a code I (or someone else) gives and passing the challenge without actually knowing how. Follow the guidelines I gave you above and try to come up with the code on your own.

Feel free to ask for help anytime you need it.