Hours of operation are flexible, as my business is 100% virtual and I work in multiple time zones.
Preferred method of communication is email. Phone or text for emergencies or issues that require immediate response.
Meetings usually conducted via Skype or Zoom.
Project management systems - open, as I use Asana, Teamwork. I am open to using whatever system a client is currently using.
File sharing is usually done via Dropbox or Google Drive. I also use Box.net.