Part 1 - Create a Wallet :
Step 1: If you have used mist before, you have created a wallet and have the private key for that wallet stored on your computer, find your keystore and you can skip to part 2. If you need to create a new wallet, you can use MyEtherWallet to do so. Simply visit MyEtherWallet, enter a strong password and generate a wallet.
Step 2: Store your Private Key. You have 3 ways of doing this. You can download .JSON file with an encrypted version of the private key which is compatible with geth, mist and myetherwallet and requires a password to decrypt (Keystore). You can also store unencrypted version of your private key by downloading it in a .JSON file or by copy pasting it from the website. We recommend you use the Keystore (encrypted) feature, which provides an additional layer of security to your wallet.
Step 3: Save your wallet address or QR code. In order to receive transactions you must give the sender a public key to which he can send the Ether to, you can copy the text format or the QR Code. The QR code can also be used to make a paper wallet.
Part 2 - Send a Transaction :
Step 1: Once you have your wallet you can now send and receive transactions. All you have to do is upload the private key file you have created through the MyEtherWallet website or mist/geth. Simply click "Send Transaction", select the type of private key you want to use (Keystore, Json file or Plain text) and click "Select wallet file".
Step 2: Select the wallet you want to use. You can check the wallet adress the key belongs to, by looking at the file name and adding "0x" in the beginning of the address. Mist wallet private keys are usually stored in .folder. Once you've selected the correct private key, type the password and click "Unlock wallet"
Step 3: Now all you have to do is fill out the Wallet you want to send Ether to, and how much you want to send. Click "Generate transaction" and then "Send transaction".
Step 4: One last confirmation window will appear, click "Yes, I am sure"