I began to play demonology warlock in ptr and using common sense I got some idea on how to play warlock. All constructive critisism is welcome.
This is for 5.4
Talents & glyph
http://www.wowdb.com/talent-calculat...BKXhLLTLLUA27k
Rotation priority
1. aura of enfeeblement & corruption at beginning
2. hand of guldan & soulfire
3. demonic slash
4. immolation aura
Defensive cooldown:
1. dark bargain
2. unending resolve
3. fury ward
4. all three fear
Offensive cooldown:
1. summon terror guard
2. summon abyssal
3. dark soul knowledge
4. pet special
5. demonic leap
6. garrion swarm
How to play:
At first I usually follow rotation priority described earlier. When I decide to burst, I pop up all offensive cooldown, sometimes together with defensive cooldowns like dark bargain. Fury ward works as second trinket which helps a lot. Demon gates and teleports also useful but I often forget them.
I am most of the time in dark apotheosis form, but sometimes if I have a lot of demonic power I will switch in metamorphosis. My biggest issue now is to understand what is the point of dark apotheosis in a sense that why should I be outside of it since it removes channel from hellfire and makes shadowbolth instant.
This is not meant to be any kind of definitive guide on how to play warlock, but rather I am trying to describe how I am playing currently, and maybe it gives some tip to people wanting to learn something.