If you are signed in, you can double-click inside any "card" to edit it.
To make a link to another card when you're editing, place the card name inside double brackets, e.g. [[card name]].
To post URLs or links where the text you click on has different wording than the technical location of the link, put the real location before a "pipe" character | and the displayed name after, like this: [[exact URL|display link]].
To get to the page (and web address) for a card, click on .
There's a link to your home card in the header — My Card: your name, and you can put information about yourself there, and change your password (in the Options tab).