Trello is a free (to begin with) system for visually defining and tracking the progress of your projects. It is simple to use, quite limited in its features but has the capacity to be scaled up to suit even the most complex of projects.
• The Trello Environment
• Create a New Board.
• Organise Information with Lists and Cards
• Adding Checklists, Due Dates and Attachments
• Using PowerUps
• Collaborating with Trello