Go to Pages -> Add New, choose a title for your home page, click on COMPOSER button, choose INDEX template and save page. We COME BACK on this page after create other page section.
CHOOSE HOME PAGE
Go to Settings -> Reading and from Front Page Displays choose a Static Page (your home page already created). Click on Save Changes button.
Go to Pages -> Add New and click on COMPOSER button. Choose template page (Parallax for example), choose a title for your page, fill the fields and publish your page.
You can do this for all your section page.
COMPLETE YOUR HOME PAGE
Complete your home page with your new sections. Re-open your home page, click on +Add and add section to your home page. Click on Update to save your changes. After this, you can change the order of your section with drag and drop function.