To get Ethereum address is pretty easy. Just follow the steps below:
1. Go to https://www.myetherwallet.com/
2. Enter a very strong password and press Generate Wallet.
3. Copy and save your address, also known as your "Account #" or "Public Key".
4. Download Keystore file and JSON file and save them in a folder you will not forget.
5. Copy and save your Private Key. Noone must find it.
6. Also i recommend to print your paper wallet.
Thats it you have an Ethereum Wallet now.
To open your wallet:
1. Press View wallet info.
2. Select the format of your Private key.
3. If you select JSON file or Keystore file, just browse the .json file you downloaded at the beginning and press Unlock Wallet. You're done!
4. If you select Plain Text, just paste your private key and press Unlock Wallet.