Hi again, Mikhail
I am glad to see you here 
Wow, would you really want to help with improving the Edgeryders website? We will have a dedicated hackathon, led by the brave @danohu, at LOTE4, but there are always tasks for people to play around with. If you are interested, maybe join the Dev&Testing group.
We use a Drupal-based issue tracker-like system for bug reporting and fixing. We also use the same system for non-development tasks, like organizing conferences or parties. To see all tasks (you can filter the view dynamically) click on “Tasks” in the main menu; to see just Dev tasks, navigate to the Dev and testing group and click on the Tasks button to filter the view by content type “task”.