Tech Site Builder websites come with a blog page by default. However, you may have deleted this page in the past and now wish to bring that functionality back. Here's how to do so:
1. Go to Pages>Add New
2. Add "Blog" as the title of the new page, select "Blog" from the template dropdown, and select "Publish" when you're done.
3. Go to Menus to add your new "Blog" page to the menu bar.
4. Select "Blog" and then select " Add to Menu".
5. Arrange your menu how you would like it to appear.