Storm is a distributed realtime computation system. Similar to how Hadoop provides a set of general primitives for doing batch processing, Storm provides a set of general primitives for doing realtime computation. Storm is simple, can be used with any programming language, and is a lot of fun to use!
Feel free to ask questions on Storm's mailing list: http://groups.google.com/group/storm-user
You can also come to the #storm-user room on freenode. You can usually find a Storm developer there to help you out.