If I have BitCoin and I want Ether, how do I do it?
Firstly, you will have 2 wallets
1 for BitCoin
2 for Ether
Take the Public Keys for both and go to ShapeShift
You will see an option like this:
Choose the currency that you want to send and the one you want to receive:
Bitcoin and Ether
Press continue and the following page with appear:
Enter the Public key for your BitCoin.
Enter the Public key for your Ether.
Notice the Minimum and Maximum Fees and the Exchange Fee.
Then, if you are happy with what you see, start the transaction!