Welcome to the Lonelipedia.
You need to log in in order to edit anything. The wiki uses the albatrosbits forum authentication, so use your forum username and password. If you want to edit but don't have a forum account, you can sign up for one here. If you don't know how to work wikis, they're kind of fun - have a look at the Wikimedia Official User's Guide for an introduction.
As in any collaborative environment, please be respectful of other peoples' work, please discuss major changes before executing them, and if you disagree with something that someone has done, discuss it in a calm, etc. way.