How to create a Subsite in Sharepoint 2010

•   Click on Site Actions in the Site

•   Click on "Create a site for a team or project. (New site)

• Click on Browse all to browse all the site templates available

 

•    Select the template .  I have selected the Team site template .  Click on more option on the right to add more details 

•      Fill in all the details as shown in the screen shot 

•      And then click on create Your site is ready

•     You can navigate it from the top navigation as well as from the Quick launch as we have selected both the Options