I probably sound like a tool, but I searched high and lo for any way to access the Tribunal from the LoL website. Whenever I want to try a few cases I have to go to google and search for "League of Legends Tribunal".

It's pretty well hidden

Bottom of the page, little blue button says "Tribunal" hope that helps xD
Random spot to place it aswell :|

http://eu.leagueoflegends.com/tribunal

At the bottom of page is only tribunal policy. Accually i don't know how to enter tribunal without direct link, it's a bit weird ;]

http://eu.leagueoflegends.com/tribunal/

That should do it

Indeed, it's a bit weird that there isn't no big friendly button to get in the place. My guess is that it isn't officially released yet?

Anyhow, just bookmark the link.

Personally I've bookmarked this link:

http://eu.leagueoflegends.com/tribunal/acceptance#15

It takes you to the bottom of the guidelines you need to accept. So from there you simply press "I've read & agree"

Hope this helps

Why cant i get into the tribunal even though im lvl 30? :s