Check your metre box to see if any switches are off and if it still persist to keep tripping after attempting to turn on contact an electrician.
1. If you have any old lighting in you home your best option is to upgrade them to LED witch will cut over half the power usage as a normal halogen light and will provide a better quality lighting in your home.
2. Install ceiling fans, it gets hot in summer and leaving the air conditioning running all night will add to your power bill, having ceiling fan will allow you to sleep comfortably keeping your room cool and breezy.
Be sure to have your main switchboard upgraded and have a RCD (residual current device) to every power and light circuit.
This RCD is designed to save lives by monitoring power flow and making sure its even. This is different to a normal circuit breaker witch is designed to protect the electrical wiring in your home.
Keep calm and contact a electrician immediately stand away from the exposed wiring DO NOT attempt to try fixing anything yourself.
Switch off all TVs and computers, and keep mobile phones off charge do not use any wired appliances or devices. Wireless appliances are safe (cordless phone, razer, etc).