MAIN QUEST 2: Growing up fast
Received from: James [Vault 101]
Solution: This quest begins when you're 10 years old and you're having a birthday party. Start off by listening to what James and the Overseer have to say. Notice that you've been rewarded with a Pip-Boy 3000. Now you'll have to talk to Amata. It doesn't really matter whether you're polite to her or not, because either way you will receive a gift from her. It's going to be a comic book about the adventures of Grognak the Barbarian. I strongly recommend that you open your inventory and read this book, because your melee weapons ability will be increased by one point. Now you may start talking to other party guests. Old Lady Palmer will give you a sweetroll and Stanley will give you a kid's baseball cap.
There's going to be an incident during the party. One of the robots will destroy the birthday cake by mistake and this will make the local bully who goes by the name of Butch very angry. You'll have to talk to him and the conversation can have a different outcome depending on your answers. You can give him your sweetroll, you can try convincing him that you should share the cake, you can destroy the sweetroll by spitting on it or you can even insult his mother. If you choose the last option, Butch will attack you (screen). Thankfully, you won't have to worry about him hurting you. Once the situation has been resolved, talk to Amata again.
James will soon inform you that he has prepared a reward for you and that you should meet him in the reactor room. Try leaving this room and you'll come across Beatrice. Once again, you don't have to be polite, because it won't change anything. Notice that you've received a birthday poem. Read it if you want to and exit the room. Proceed to the lower level. Reach the reactor room (screen) and talk to Jonas. Wait for James to show up. He will give you a BB Gun and some BBs.
Now you must follow James to the southern corridor. This is where you'll be allowed to test your new toy and you'll familiarize with the basics of the battle system at the same time. Choose the BB Gun from your inventory and use it to destroy three targets. Once this is done, you will have to kill a radroach which is nothing more than an oversized bug. Make a few steps forward to find the creature. You can still use this view of you can activate the V.A.T.S. system. Return to James once the radroach is gone. Wait for Jonas to take a picture of you and your father.