Here are the steps to upload and publish a new Epub title:
1. Log in to your account in Papertrell (http://www.papertrell.com).
2. In Dashboard >> Title Management >> Add New
3. Click on Epub title
4. Select a Epub file and click on Import
5. Edit Title metadata if you want ( Title name, Author, Description, Cover image ) and click on Create
6. Once the title is created, click on Yes, publish now and select the Storefront you want to publish the title >> "Continue"
7. Update the details like Price, Country and Choose the Storefront
8. Scroll down and click on Publish