To adjust the default view of the public calendar link you can pass through URL parameters. Below are a few examples that you can do to change the default view of your public-facing calendar. To learn how to embed your calendar and remove the frame around it look at this Embedding Landing Pages Article.
Quick recap from the Embedding Landing Pages Article
To embed your public calendar copy and paste this code and modify the URL to match your subdomain and parameters (from below) to match your preferred view.