He's saying he has the chance to get a domain, prolly for free, and it can be whatever he wants it to be.
You should consider picking a domain name that had to do with a topic you want to make a site around. You're also going to need hosting, you can find web hosting cheap a couple bucks a month just google for it.
Probably the best thing to do is just create a site, pick a topic that you're interested in and create a site around it. After that you can monetize it but it will be easier if the topic is based on something you're interested because a successful site needs good and fresh content for you to regularly provide. After starting your site (easiest is Wordpress both for site creation and adding new content). Once you have a legit site with content read about and learn how to do SEO - building back links.
Don't spend much if any money on back links to start you want to learn how to do the basics and you can do a lot of link building manually without spending anything.
From here just keep adding good content regularly and building good back links regularly and you will gain rank in Google and other search results while also providing the content visitors want. By this time, depending on your niche/topic you should have an idea of how you can make money off of your traffic whether it be Adsense/ppc ads or cpa offers or related stuff for sale via affiliate programs where you get a commission.