You don't need to exchange anything, there is a snapshot taken on the day of the fork. There is really no work to be done. It's just like the stellar and byteball airdrops, all you need to do is to import a private key with coins in it on the snapshot time.
Stellar and Byteball airdrops were different. They just neeed a signed message from your Bitcoin wallet. But BCC is going to be different. It requires the private key of your Bitcoin wallet to be imported in to a BCC-compatible wallet.
So here is the best way to claim BCC: Move your coins from your primary Blockchain.info wallet to another wallet a few days after August 1. Once this is done, import your private key from your primary wallet to any of the BCC-compatible wallets. In this way, you will get the BCC and there will be no risk for your Bitcoins if something turns out bad.