Once you create a new character and you login in the game you are in Warsong custom Mall ->
Patch-W.MPQ updated is Mandatory otherwise -> Wow Error.
You start directly level 80 , / learn your talents / techniques / glyphs / mounts
put on the free starting gear
Arrange your techniques and you can start your journey
discover Mall npcs, this would give you an idea off the server content , the same thing for the Teleporter.
Many farming zones are available and many sets too pvp2-> pvp3->leg1 -> leg2->leg3->mythic +1 to +10
Daily quests will give you a considerable boost.
Final bosses of Karazhan and Ahn Qiraj Temple loot a
pvp2 random piece, illidan loot a pvp3 piece (legendary ~1%)
at the end of battlegrounds you will recieve a chest that have a random pvp 2 or pvp 3 piece.
Participate at GM Events rewards tickets tradable for interesting ingame items and currencies.
think about reading website Guides too.