I'm a newbie in using ethereum wallet.

After i Completely install & download data for test net.
I create a new account but my new account has nothing (0.00 Eth).
It lead to I can't do anything by this account.
I try to create a new contract but It hopeless("the account you want to send from is empty".

Please help me create a new account (temporary with a little Ether coin) for test net. 
I'm using "etherum wallet" and deploy contract by UI.
Please give me some instructions for this.
Thank a lot