Every account on Coasterpedia and Tilt-A-Wiki has its own user page. On registration, a user page is created automatically - for an account called Example, its userpage is situated at User:Example. Note that the user page is created within the User namespace.
User pages may be customised and, generally, an account holder may publish anything they like on their user page.
Userboxes are an easy way to express yourself on Coasterpedia. Coasterpedia:Userboxes is a list of userboxes which have been created for Coasterpedia and Tilt-A-Wiki users.
Babel is a simple way to list what languages you can speak and at what level.