If you currently have a website in WordPress, you can easily import the content to a MyWeb site. Just enable the WordPress Importer in the Plugins list.
Then go to Tools > Import to import your old site. Select WordPress from the available importers. You will need to have the export file from your old site. This is an XML file with the content that you previously exported. Once done, Your content will appear in the MyWeb site.
Note: Themes and plugins will not be imported. If you had custom themes or plugins on your old site, you will need to re-activate them on MyWeb if they are available. Importing is only for your actual content.