See also my previous post on this called "Age 10".

Things you'll want to keep in mind:

• There's a few different ways to approach things in this segment. So save right at the start and try again if you're not content with the outcome.
• The [Tab] key will bring up the Pipboy, pressing and holding [Tab] will turn the Pipboy light on and off. The light provides a small (few meters at the most) bubble of light around you, useful for exploring dark environments.
• Some conversations are triggered by proximity. As soon as you get close to the person, your camera will swing around and you'll be forcibly engaged in conversation.
• I generally remap the "Use" key to [F] instead of the default of [E].
• The [R] key will ready your weapon (or fists), reload it, or if held down it will put the weapon (or fists) away.
• When fighting unarmed, [Left-Click] to throw a pair of punches and [Right-Click] to bring up your fists and block.
• If you're looking at your inventory in the Pipboy, [Left-Click] will use/apply the item (such as a Stimpak or reading a skillbook like the comic book you were given). [Right-Click] will drop the item to the ground at your feet (if it can be dropped).

I've split up the Birthday Party videos into two sections (due to YouTube limits). These videos do contain spoilers, but they don't show every possible conversation tree.