I'm assuming that this is the way Germans say that something is really close, right?
What is the difference between "von hier" and "von hier aus"? As far as I know they both mean the same "frome here".
They both mean similar things, but contextually they're different. You can almost think of it like "from here" and "from here out", where the second one is referring to a certain distance.
why "Ein Paar" is not "a pair of" ???
It is. But this sentence contains not ein Paar but instead ein paar.
ein Paar = a pair (exactly two, that belong together)
ein paar = a couple, a few (a small number, not necessarily exactly two)
In the sentence it doesn't sound like h in hier is pronounced..is it supposed to be?
Yes, "hier" should be pronounced with a /h/ at the beginning.
How about a short distance instead of a few steps???