Consistent compliance with Wikipedia policy is more important than your personal beliefs. Inconsistent compliance is a good sign of activist editing.
For example, if you assert something, and are presented with countering evidence from a reliable source, do you consider changing your position like a reasonable editor, or do you ignore it to argue your position?
When you join a wiki community, be a constructive editor.
The easiest way to create a new article is to click on a link to a page that doesn't exist. Typically, these links show up as red links.
You also can use the Search box—on the top-right corner of your screen—to look for an article name. When you are told that the page does not exist, click the link provided. You can also use the Article Wizard.