Depends on whether it's Xbox live or not. You can make one free that doesn't, have Xbox live
no you have to make one then you have to connect your xbox live acc to it
you can't change your age on xbox 360 but you can make one more account and put it over 18 and then add gold
Make a new e-mail.
Yes, one can have more than one account with membership (silver and gold).
Nothing bad happens, you simply have another Xbox account on your memory unit and you can choose what to do with it.
Yes, you can use your Xbox Live account on your new Xbox One.
Sort of. When you connect to Xbox Live, you get one free month of the Gold subscription. After that you have to buy it, or make another account.
Yes, but when you make a new account, you get a free month of xbox live, but you can only do this three times. It costs $5 dollars a month per account if you buy the year package, the other packages are more expensive per month.
The parent will get an Xbox live account if you make an account and you put yourself as under 18 years old. The parent count is not charged separately, though, it's all one bundle.
Yes, they both utilize your Microsoft account, therefor you can have the account on both your Xbox 360 and your Xbox One. You will just have to bare with being prompted with "This account was logged in on another console" each time you switch from the 360 to the One.
You only get 1 month of free Xbox Live Gold Subscription if you make an account on your Xbox 360
Yes , you won't lose your account plus you keep your gamerscore and xbox live works on both 360 and one