You can create and set a Landing Page to your website to introduce people to your website. You can either create a custom Welcome page or have your Portfolio open to a specific Page or Gallery.
You can create a new Page by clicking on "+" (Add Content) on the left side of the screen and then “Page”.
Once you've identified or created your Landing Page, click on "Settings" and navigate to "Landing Page". In the first drop down, you can select the Page you've planned on using for your Landing Page.
Note: You may have to Publish your site before being able to set your original ‘Work’ Gallery as your Landing Page.