How can I export my sources and feeds (through OPML)?
If you are looking to export your feeds, please follow this link: http://feedly.com/i/opml (works only via the web app, not the mobile app)
Note: The OPML export will only export your feeds and will not export any Boards or Read Later articles.
If you are interested in backing up your Read Later articles and any of the articles you save to Boards, you might be interested in the Dropbox integration which does this automatically, or you can also set up automation via IFTTT of Zapier. (See FAQ article).