Welcome to Wikipedia! Almost every page can be edited by anyone, and hundreds of changes are made every hour to add content, correct mistakes, and improve readability. Changes are immediately viewable to all readers and no matter how trivial an edit may seem, you can be proud to have helped make Wikipedia better.
This page takes you through a set of tutorials aimed at complete newcomers interested in contributing. It covers all the basics needed to navigate, comment on, and contribute to Wikipedia articles. There are two methods of editing: the VisualEditor, and Wiki markup. Each tutorial takes only about 10 minutes, so you could become a proficient 'Wikipedian' in under an hour!