[Can't load game anymore]

I played the other day but now i keep getting this error, is there any way to fix it? I have it windowed right now cause it would freeze 

[New to the game]

Hello, im still somewhat new to WoW and i have a 112 demon hunter now but i can never seem to find any gear to get. i cant do any dungeons or raids im more of a solo player. is there anyway to farm gear for solo players? also mounts