I'm playing in EU Servers and got no real PVP Experience except normal BG's and some Arena but mostly PvP

I want to start RBG for Transmog the blue vanilla PvP Set - so how hard is it , how much time invest and how hard to find a group if you got no real xp?

Where can you buy the old pvp sets? I'd like to transmog an early season hunter set.

1.8k is easy.... last season i got 2k in rbgs in only 20 games in pugs.... was not hard at all.

rbgs are a joke up until like 2.2