http://www.badmephisto.com/pllprint2.pdf
in this pll pdf which one is the side towards my face? the red color?
Hello ahmedkl!
I'm not sure what you're asking, are you confused by the diagrams?
Take this one for example (a J-perm, for the record):
This is a diagram of the top face, as if you were looking at it from above. The red arrow(s) show which edges need to be swapped, the blue arrow(s) show which corners need to be swapped.
On some sites, you may find diagrams which look something like this:
This is the same case shown in a different way, as you can see on the diagram, the orange and green edges need to swap, and the orang/blue and orange/green corners need to swap. Of course, it won't always be the orange and green edges, but hopefully you can see the pattern which is shown by the arrows in the other picture.
So, hold you cube with the last layer (I believe you solve a white cross, so the yellow layer) on U. The alg listed for this case is [R U R' F'] {[R U R' U'] [R' F] [R2 U' R'] U'}. Often, the best way to see what a case looks like is to execute the alg. For most PLLs, one execution will move your cube into that case. It's important to realise that it doesn't actually matter how your top layer is positioned with respect to the rest of the cube. So, what I mean by that is that you could do U or U' moves, or y rotations and that's fine. You don't need to have the red face towards you, or any face for that matter. What
is important, however, is that your top face is positioned in the way shown by the diagrams.
Does this help? Or were you asking for something else?
[Edited in a bit more detail]