i dont know exactaly what the orignal fallout armor is like or what it looks like or the story for that matter. can someone tel me?

The same as T-51b.. Wheredid you think they got T-51b from? Bethesda didn't make it.

What the original fallout armor looks like? heh... Possibly not as spectacular as you might expect.
If you're talking about power armor, it's very powerful indeed (even overpowered some say)
It's exactly like http://fallout.wikia.com/wiki/T-51b_Power_Armor.
The story is good and fitting to the setting.
But you can find out everything about it http://fallout.wikia.com/wiki/Fallout.

But hey... why don't you play it to find out for yourself?