Hi,
I have question, if I will have on Bittrex BTC, Bittrex change BTC automatically for BCC? Or my BTC stay here and I obtain else + BCC for free?
It is better for you to store your btc on a wallet you own and a wallet that you have full control with, having access to it's private key. This way you will receive bcc for free and it is guaranteed because you control it, not third parties. I am unsure what bittrex will do but most probably they won't give you the free bcc but you will still have your bitcoins. Only do my suggestion if you want guaranteed free bcc.
I think bettrex already post that they will support both BTC and BCC or BCH they announce already that they will support this both so maybe they will also credit each acount btc wallet for the free airdrop or bitcoin cash but still we dont know yet as clear if what happen after augost 1 actualy i have a small btc in bettrex and i cant withdraw it now because its already in maintenance wallet.