Hi! These are all great newbie questions, I so do not want to discourage you from asking questions, but it might help you to follow the online tutorial redhat has provided on it's website for RH 9. It's an in depth walk through to help those who are new to linux.
Just an idea
Please don't feel that I don't want your questions here, I'm just trying to provide you a resource that makes for easy reference for you.
For your question:
Use locate or find to find packages on your system. In a terminal type;
And locate will find it. You may have to populate the locate database first, to do that, as root type:
into a terminal. Then logout of root and use the locate function above.