Use natural light!
Just open the curtains and let the light in, not only will it save you money, but it will reduce your energy consumption tremendously! Also close the curtains at night, so that when using the AC at your home, the area still cools down.
Use less hot water
It takes a lot of energy to heat up a tank of water, so putting on the geyser at your home for long hours, will consume a lot of energy. Perhaps using a timer to ensure a regulated amount of time could be efficient.
Wash only full loads of clothes and dishes
Install low-flow shower heads
This will ensure maximum efficiency
Be energy efficient
Using LED lights are more efficient than traditional lightning