How to prepare for Google CodeJam?

Question

I saw about Google codejam and was greatly interested in it and wanted to participate so how can I prepare for this such big event and participate in it?

If you dont know about codejam then hears the link below and start with it!

https://code.google.com/codejam/

Answer 1

Thank you guys!
helped a lot

Answer 2

Go on websites like HackerRank, HackerEarth, CodeWars to train yourself.

Answer 3

You can prepare yourself by solving the problems of past CodeJams.
https://code.google.com/codejam/past-contests