If your one of those who want to get involved right away with trading your Bitcoin and Bitcoin Cash asap after the hardfork. Finding an exchange who will support both coins after the fork might be difficult many exchanges have said no to Bitcoin Cash and some are kind of leaving their customers in the dark. Bittrex has announced they will be supporting both chains Though deposits and withdraws will not be available for 24 hours prior to the hardfork.
https://support.bittrex.com/hc/en-us/articles/115000808991-Statement-on-Bitcoin-Cash-BCC-