The first bill is usually a bit higher than normal. Firstly, it will include your first months Start Bundle subscription in advance plus a pro-rata amount from the time between when you joined and your first bill. Secondly, any other set-up or modem costs will appear on your first bill.
You can download an example PDF copy of a first bill here.
From your second bill you can expect to see the standard monthly subscription of your Start Bundle plus any non-included Start Talk usage from the previous month.
You can download an example PDF copy of a second bill here.
Note that for customers requiring a new phone line to be set up, any associated Line Connection charges will appear on either your first or second bill. These phone line connection charges are pass-through charges from Telstra.
For more details regarding phone line connection charges click here.