Some fanboy will probably flame me for saying so, but if your totally new to Linux, Fedora may not be the best choice, but since it's already installed and if you don't mind a little frustration here and there you will learn more from this distro than some others.
I would start by opening a terminal and typing
that should open a window where you can turn services on and off, make sure you go to the Edit Runlevel menu and select ALL, now go through and disable anything you don't need, especially yumupdatesd,
Here's a breakdown of some different services and what they do, along with which ones you should not disable.
now save your changes and close the window from the same terminal run
yum update -y
then reboot and see if anything changes.
Now none of that is really meant to "fix" anything, it's just in my opinion the first things you should do after any installation.
Not sure about your Open Office crash but Seve just responded to your post on the other thread.
As for your other problems you're going to have to be a bit more detailed, "My terminal behaves crazy" just doesn't tell us anything, so try to give a good example and someone should be able to help out.