Read Theme Documentaion!
Step by Step Guide! Read Theme Documentaion for Setting up Homepage, It's Easy!
After setting homepage
layout, you can add portfolio item, or adding slider item, or creating blog post for a layout, read it in documentation.
To set homepage layout, you need to create a page first. Click on Pages > Add New write a name, then you must leave the content area emtpy, dont add
anything, then see on Right Side there is Template, below that is Drop Down Navigation, here you can choose any layout for homepage. Once you select then Publish, thats it dont change
any other value.
Now go to Settings > Reading
and check the box of Static Page
and choose from Front page drop down
your page which you have created. and Save changes.