Hi All - New to Private Servers & CONFUSED ! Advise please

[Noobinit]

Hi all, just would like to get some tips from everyone on which threads to look at first - Please!
It is a little overwhelming with all the information to look at.
I've looked everywhere and can't find a single post ! How strange !
In particular, I'd like to get a description of the differences between the different realms.

Like what is the dfference if any between blackrock and Ragnaros if any such as experience rates etc.

I'd also like to know about Neltherion and warsong.

Any help appreciated.
thanks

[nunoalt]

Blackrock for one is a instant 80 PURE PvP server like just for bgs and arenas and you start off with relentless glad gear the threads idk exactly where one that can be helpful (pretty late at night) ragnaros is the x7 rates PVP realm and i mean PVE/PVP realm so ICC and all WoTLK dungeons and raids are working

Warsong is the same thing for Cata like blackrock is and also neltharion same thing like Ragnaros except Cataclysm Content