How do I make my site as public?

By default, all sites are created private. If you want your site to be a public Web site, enable anonymous access for the entire site, follow these simple steps:

1. Click on Site settings
2. Click on Go to Site Administration
3. Click on Manage anonymous access
4. Choose one of the three conditions on what Anonymous users can access:
• Entire Web site
• Lists and libraries
• Nothing (Default condition is Nothing. i.e., your site has restricted access.)

So that, you can make your SharePoint ste as non-restricted site i.e., public site.

Note: The default conditions allow you to create a secure site for your Web site.