These articles may help... http://mzl.la/1hFlWgB - Create a Sync account section, if you haven't have a sync account. Else, just sign in. There's a video on the page too. This one for your iOS device - http://mzl.la/1kPYeju - Connect your iOS device section. Note that you can only sync bookmarks from desktop to iOS, but not from iOS to desktop, at least for now. Future versions might change this.