For Mozilla, Josh Matthews made a page to find mentored bugs: http://www.joshmatthews.net/bugsahoy/ http://www.joshmatthews.net/bugsahoy/ which is a good resour

For Mozilla, Josh Matthews made a page to find mentored bugs: http://www.joshmatthews.net/bugsahoy/ http://www.joshmatthews.net/bugsahoy/ which is a good resource to finding a task and somebody to help you. If you're a bit more brave, you can just dive into bugzilla.mozilla.org and find something you want to fix, but honestly it's full of junk bugs and without having a feel for things, you'll have a hard time.