No, you do not need to do that. All steps will be processed completely online.

SSL encryption is used on all pages of our website to keep sensitive information. 

If you did not receive your confirmation email after applying, then please check your SPAM folder and privacy settings in your email account

Australia eVisitor/ETA is issued to help traveling to Australia be easier now.

Australia eVisitor/ETA is one kind of online licensing that allows people of eligible countries to enter Australia.

Yes, of course. Each person must have a different eVisa/ETA.

An eVisa/ETA can be acquired effectively anyplace with a web association and it spares your time and effort instead of applying at the missions, embassies or at the ports.

Your eVisa/ETA is valid for 12 months from the intended arrival date until the intended departure date filled in the application form. 

No, you do not. You only need to show your passport for checking at the airport.

No. For extending your Visa validation, you should use the service at the local travel agents or embassies.