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In the username field, type in your full e-mail address, its respective password and click on Next.
ownCloud will now offer to sync all files on the server. If you haven't used our service before, then you don't have any of your files stored by us yet, rather just a few test files that ownCloud adds itself to every new account, approximately 3 MB. So you can safely keep the default to sync all files from Cloud to your computer, which is useful even so you can start to understand how it works.
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