Internet / NBN
Your NBN is installed in the garage, this provides you the ability to have internet, does not meant it is currently projecting internet. You must speak with an internet provider and take up one of their internet packages.
Being a brand-new home and has never been connected to an internet provider previously, most suppliers add a onetime charge of roughly $300 for the initial connection. Most suppliers have the option of adding this to your bill and slowly paying it off instead of having to pay it all up front.