It's so amazing that you'd like to contribute! The best thing you could do right now is officially create an account; this way you can keep a track of the edits and additions you make and add full validity to the wiki. From there, if you have any contributions you would like to make or any pages you would like to add and edit, feel free to jump right in!
Let me know, and thank you so much! I'm so glad you like the wiki!