If you want to show blog on website, please follow:
Create a new page .
- Please go to Pages > Add New.
- Enter a Title like “Blog”.
Set the page as as posts page
- Please go to Settings > Reading.
- You will see Front page displays area, there just choose A static page (select below) option.
- On the Posts page choose your earlier created Blog page.
- Click Save Changes button.
Learn about how to set blog layout like sidebar.
Maybe you want to know how to create blog posts.