Installing a ceiling fan provides ventilation and improves cooling in summer as well as circulation in winter. Though installing the ceiling fan by yourself is doable, it is highly recommended that you get an electrician to ensure a strong hanging system and balanced fan blades to prevent a wobbling fan.
There are clear safety standards in electrical installation as set out in Australian Building Codes. That must be followed.
Always remember to ensure safety and quality of the ceiling fan you choose to install. This will surely make your place as comfy and pleasing to as possible while avoiding any dangers or issues with your fan in the future.