What is Subsite?
In the following illustration, My_site is one of two subsites of the top-level Web site named My_server. My_site also has two subsites of its own. Together, My_server and all four subsites make up a single site collection.
Create a Subsite:
If you want to create a site to manage content related to an existing team or project, you can create a subsite off of that team or project site. For example, you could create a team blog as a subsite to your team site.
Before creating a subsite, make sure you are at the location on your site where you want to create the new subsite. To create a subsite you need to have at least permission equivalent to being in the Designers group on that site. When you create a subsite, you can choose from several site templates, such as a blog, community site, or project site.
- Click Settings
> Site contents.
- On the Site Contents page, click new subsite.NOTE If the new subsite link doesn’t appear on the Site Contents page, you don’t have permission to create a subsite.
- Type a Title and URL name for the site, and select a template. If you want to, you can also change the permissions and navigation settings for the site on this page.
- When the initial settings look good, click Create.
Step by Step:
http://plexhosted.com/billing/knowledgebase/268/How-to-create-a-sub-site-in-SharePoint-2013-.html
