Hi again, ahmedkl!
As you can see from the other replies, the tutorials by Badmephisto which I linked you to in your other post are really the best ones out there for the Fridrich method.
F2L can be quite hard to understand at first, you're no longer mindlessly memorising algorithms and executing them blindly. Instead, you have to follow the movement of the pieces and try to understand what's happening. F2L is often described as 'intuitive' and that's really the key idea here: You are using your own intelligence to set up the corner-edge pairs, ready to be solved. Remember: The key idea behind F2L is to solve first layer corners and second layer edges simultaneously.
Unfortunately, I can't upload pictures in posts any more (firewall troubles), but if you look at the image I've attached to this post, I show that the basic (very simplified) idea behind F2L is to find corners and edges which belong together in an F2L slot and position them in such a way that they can be inserted at the same time. F2L contains many cases, and you must constantly be aware of which slots you have already filled, so I'm not going to list every single possible case here. However, if you watch Badmephisto's tutorial, he shows you all the cases you need to solve F2L as a beginner. Often, this will involve hiding either the corner or the edge, and moving the other piece such that you are presented with one of the cases in the attached image (or their mirror). This is a very intuitive process, and you just have to play with the cube to get a feel for it.
Take your time, watch how the pieces move and feel free to watch the tutorials more than once. At the end of the second part of the F2L tutorial, Badmephisto shows some example solves which you may find helpful.
Again, for your convenience:
Part 1
Part 2
When you get to it, I don't expect you'll have too much trouble with OLL and PLL. As with beginner's last layer, it's just recognising cases and learning algorithms.
Good luck and keep trying!