"OP" means "original poster", the person who started the thread.
I think Markos means the two-line signature of the post, rather than the post itself.
"Background: training from Oct 2008 to present.
"Strength: Bench 5RM: 80kg, Squat 5RM: 80kg, Deadlift 5RM: 110kg"
Going on his sig, I have roughly the same strength as Rasika, though have been at the gym only since April 2009 (because I was so unfit and weak, Jan-Mar 09 were walks, runs and bodyweight training to prepare). I've achieved similar strength in a slightly shorter time (still slow compared to what it could have been), but I am not worrying about this sort of stuff.
It's interesting to read and mentally file away for future reference, but it's just not relevant to me today. I need to get stronger on the basic lifts first.
Perhaps Rasika could explain why he's different from me, why he needs this fancy stuff but I don't. But most likely it's just never occurred to him. Sometimes we get so enthusiastic about walking among the trees we don't see the forest anymore, we get lost in the details. Enthusiasm is good - don't put it into reading and thinking, put it into lifting.
Markos is saying that Rasika (BoyFromAus) is just a beginner, so he doesn't need to worry about fibre-damage-fibre-saturation training or whatever this is about. Walk before you run, drive in a straight line before you do burnouts, learn to swim before you high dive, and so on.
As I said, consistent effort gets results. There's no need to look for fancy training routines. Pick a simple one and stick to it, if you get results keep going, if not then change it.