Start from reading and writing file

1.you can even install GNUstep on Windows, but I have started on Ubuntu, there is no point of the switch. Just save the link:
http://www.gnustep.org/experience/Windows.html
2. Can't find the header file
some said it could be fixed by running the commands, sudo apt-get -y install build-essential
but it doesn't work for me. Still need to work on this tomorrow
3.One apple game dev forum:
http://www.idevgames.com/forum/index.php