try.github.com
sudo git reset --hard origin/8.x
issue summary template: http://drupal.org/node/1155816
http://core.drupalofficehours.org/
http://drupal.org/project/dreditor --> for chrome/firefox
Novice tags are good for starting to contribute.
Applying a patch in Drupal core:
1. Download the patch,
2. apply: git apply -v [patch]