Is there a video lecture on modern physics coordinates?

[lom]

http://i46.tinypic.com/r9ha92.jpg

it looks like a coordinate

i don't know what is the meaning of this thing
?

 

[Fightfish]

That's the relativistic four-vector momentum.

 

[lom]

can you please give me a video lecture to this stuff
i am alergic to the book
i can't understand it