Aluminium cans (soft drink, energy drink, beer, water, wine) can be put in your yellow-lid recycling bin or taken to any Waste and Recycling Centre for free (for loads under 1m3). No need to rinse.
Some eligible containers can be redeemed using the NSW Container Deposit Scheme, Return and Earn for a 10c refund - find your closest Return and Earn Reverse Vending Machine here.