Bitcoin Sport has been added to ForkDelta:
https://forkdelta.app/#!/trade/0x9c5ae761cb87e2e553b55867437b1e5daca32a5f-ETH

The principle of trading is the same as in EtherDelta, but the ForkDelta application is more stable.

Educational videos below.
https://www.youtube.com/watch?v=2YeyTF5lalE
https://www.youtube.com/watch?v=7lQ801k6RX4