Create a New sub Site Option has been taken in to site Content in SharePoint 2013 New UI. previously it was on site actions. it took few minutes for me to find out at the very first experience of SP 2013 Preview.
Follow these steps to get a new site created.
- Go to Site Contents from the Settings
- Click ‘New Sub Site’ option on the bottom of the site Content Page
- Provide the details for the New Site As you want. Title/URL/Permission Type etc..as usual
- Give it a Moment. this Shouldn’t take long
- here you go !