You can transfer your BTC coins to any exchange that has a wallet to receive BTC either coinspot (High Fees) or www.btcmarkets.net and sell it from there for FIAT
Coinspsot has a lot more coins that btcmarket does not have so i presume if you have other types of coins apart from the major ones such as BTC / ETH you should be able to send it to the coinspsot wallet and sell it for fiat. You should be bale to e-mail them and they will help you.
If you wanted to sell your BTC then again you can do it via coinspot or www.btcmarkets.net(Much cheaper fees)
