If you are a newbie do register with 2-3 brokers and explore all the features offered by them. But after creating a live account with a broker then do stick with that particular broker otherwise creating 2-3 live accounts will cause lots of confusion.
Great, I also use three brokers because it is better in terms of execution. Also average spread (from my brokers) is generally better than average spread from one single broker. It is very important point which I realised but a bit late. Currently I trade with Hotforex, Tickmill and IB.