Is There Any Difference Between "Red Hat Linux","Open Suse Linux","Federo",....etc.
Is There Then Please Tell Whats The Difference...........?

Package management systems, included packages, support, kernel versions, kernel configurations to name a few. Please don't capitalise the first letter of every word as it makes posts harder to read.

You can easily go to Distrowatch and read up on the various distributions available.

masonm's signature gives you a hint xD
No, seriously, I recommend Ubuntu (or one of Ubuntu's "special" versions like Kubuntu which uses KDE instead of Gnome as default) for beginners (http://www.ubuntu.com/). I heard it's really easy to use, and I think I will try it some day when i get a new pc (to use a multimedia-capable kernel with high kernel-resolution).

Err...Pardon me but how does this help him with the difference between the distro's he was asking about?

See now? (Sorry I did not explain my opinion, though) I ment that the Ubuntu project aims to create a user-friendly OS mainly for desktops/office use/games. It builds upon Debian, which is a very stable and secure system, though it's rather useful for servers than for desktops (but, as I state in my user details, I can even use compiz [=3D effects for my desktop] with debian, just had to install some packages with the 'synaptic' tool [aptitude when there is no desktop yet]).
Speedy, for you, that means:

• If you want to learn a bit about what software you need and how to maintain your system, I recommend Debian.
• Many other free distros (say, Ubuntu, OpenSUSE) are more easy to install and use than Debian. The webpages of these 3 distros are designed to show this as well: Have a look at debian.org, opensuse.org, ubuntu.com

There is an overview on Distrowatch.com (masonm mentioned it, but didn't post the web page). On the right, when you scroll down, there is a ranking.
Does this help?

There is not nearly as much of a difference between Linux distros as there is between any one of them and windows. They offer the same software, although some prefer older versions (better tested) while other ones like to keep ahead of the pack. Some offer only a selection of the available packages while other ones try to provide as many as possible. The most importance differences are related to software management: the way that your software is installed and maintained. Some make this extremely easy while other ones expect you to bring your toolbox.