As you may know, Curiosity rover will be landing on mars tomorrow after 8 months journey from earth. It'll be broadcasted live from here (the channel is already open). If you are interested, you can follow the latest update from official website at JPL.

A contest on max flow and matching related algorithms will start within 1 hr. There is be 6 problems. Link: http://lightoj.com/practice_contest_index.php?contest_id=88

EDIT: contest duration has been extended to 24 hrs. You are invited to join. :)

Recently a online judge has been made public named LIGHTOJ created by JANE ALAM JAN ( acm icpc world finalist ). It is still under development but it looks like a good place for beginners to start their journey. All Problems here are categorized. Also has a good looking interface. It has built in online compiler that supports C, C++, PYTHON, PASCAL, JAVA. The site has built in forum and chat rooms. The facility of virtual contest is also there. Virtual contests can be arranged with your own problem set. The interface might look a bit overwhelming at first.  If you are interested, you can check it out. J

P.S. Please provide your full name and institution when you register.