Go liveReady to send your site live at yoursite.com? Changing the name servers is the recommended way.
However, if you have a special email set-up (such as Outlook 360, or Google Apps) you may wish to only change the DNS records. This is more involved, but it allows more control over managing sub-domains and other non-icompendium domain-related services.
I just sent my site live, but can't find it in Google?
It can take a few days for Google to find and index your site. While waiting, it's a good idea to make a links to your newly live site from any other sites online (such your Facebook or Twitter page).