Where do I plug the microphone in on an XBOX 1?

Voice work requires a microphone. There isn't a way of getting around it. You could borrow one from a friend. If you have the funds, order a Rode Podcaster.

No, it doesn't. However, do you have an Xbox 360? if so, try there and then it should work, provided you downloaded it.

You don't need to do that. You will be greeted with a screen that allows you to test both your microphone and camera before you join the meeting.

Making your Xbox a "home Xbox" allows you to share games, downloadable content, and even your Xbox Live Gold subscription with anyone else who signs in on your console.

It's normal for some people's voices to sound different when they use microphones. If it is really distorted, try another microphone to see if the mic itself is the problem.

Go into a music shop and ask to try out the different microphones they have. Everyone is different so you need to find a microphone that is best suited to...

The most useful solution to this problem is most likely replacing the console but, you can try rebooting the console first.