If you're unable to set up an account for Mediafire, Dropbox, Skype, file sharing websites, or use your e-mail, this does prove a bit tricky if you want to share your map with your friends. The only way that they will be able to join you is by downloading the file, and you have to have some way of sending it to them, yes? If your parents have an issue with you using or creating accounts for file sharing websites or Skype, you may need to have a chat with them. If they aren't comfortable letting you use those programs, it's completely fine, but I don't see how you will be able to share your map unless perhaps you have your parents create an account for Mediafire, Dropbox, Skype, etc, themselves and share the files for you. I respect your parents wishes, so if you're unable to work a compromise for this situation, they may want to wait a little while longer before letting you use those programs to share your map.