Pokémon Gold and Silver/New Bark Town
At the start of your adventure you wake up here. You are asked to set the clock, daylight saving time. Then the screen changes to Professor Elm, who explains about Pokémon and asks for your name. You will then appear in your room.
You can look at the Town Map next to the exit, but it it won't be very useful now. Go down the stairs. Your mum is on the left of the table. Walk past her and she will tell you that Professor Elm wants to see you, and will give you the PokéGear afterwards. After setting the date, she will also explain the phone.
Talk to everyone in the town for useful information and go to the large building to the left of your house (note the redhead on the lab's left). When you are in the lab, continue inside until you see three Pokéballs set down on a table. The professor next to them will greet you and will ask you to choose a Pokémon, for the new player cyndaquail is the easiest to pick, followed by Totodile, followed by Chicorita. He will give you his phone number. Head outside. When you near the exit to Route 29, Prof. Oak's assistant will give you a Potion on your way out.
Walk westward to start off on Route 29!