Hi Jessica,
Does the machine you installed Moodle on have always on internet access? If it does, does it also have a permanent public (in other words, a routable, not a private) ip address?
If the answer to both questions is yes, then it is just a matter of changing the webroot in your config.php file (in the Moodle folder) from what it is now - something like http://localhost/moodle to something like http://ip_address_of_your_machine/moodle and saving the changes. Then all you have to do is call your site in a browser using this URL.
If this is your case, then there are some security issues to be attended to before you go live. These depend on which package you used to install Moodle (did you use one of the complete intstall packages, xampp or similar?)
Alternatively, if you have developed some content on this machine, but it cannot be accessed from the web, you can backup your content, install moodle on a web accessible server, then restore your content to that server.
Not sure if this answers your questions, but feel free to post again if it doesn't. There'll always be someone that can advise.
Regards,
Matt