maybe he's just means the same but just got the phrase wrong hehe , thx for correction anyway 

Gooding spot to farm signet.

1. Start at Ancient Waterway checkpoint
2. Eastern/Western channel
3. Exit from channel to Dahlgur Oasis (finish all the extra dungeons here)
4. Run up to Ruined Cistern
5. Teleport to Sewer of Caldeum.
6. Relog and repeat.

All the potential maps in 1 go. Btw I don't farm nv stack at VotA cause you can only get Manald Heal ring there.. it makes you sad and loose morale seeing a skylight ring but not Leoric's Signet By the time you complete the channels, you should have 4-5 stack of nv!

Self-found 4 signets
1 at Sewer (with 5 nv)
1 at Eastern Channel (2 nv)
1 at Ruined Cistern (3 nv)
1 at Ancient Cave Lv1 (Dahlgur Oasis) (4 nv)

inb4 farkyouRNG

Carry in D3 mean few things; but most commonly use in helping other people.
For example I can carry MP10 Uber. So other players who can't do MP10 can join me; I carry them MP10 uber.

Can..inferno players can play any level they one in any party.

So when we ask for cary means ..we stack +exp gears set MP10 and the Inferno player will do the killing.

That way it is possible to level up from 1-60 in 3 hours.

- Play Normal mode until lvl25, kill Normal Diablo, jump too NM (skip quest, high lvl player open game/quest)
- Play NM mode until lvl50, kill NM Diablo, jump too Hell (skip quest, high lvl player open game/quest)
- Play Hell mode until lvl60, kill Hell Diablo, jump too Inferno (skip quest, high lvl player open game/quest)
- Kill Inferno Diablo (if u want, skip quest, high lvl player open game/quest)

Carry in D3 mean few things; but most commonly use in helping other people.
For example I can carry MP10 Uber. So other players who can't do MP10 can join me; I carry them MP10 uber.

Not sure what he/she meant by PST.
Perhaps he/she wanted to tell others the time zone or region he/she is located in.

The obvious reason is to get the material for crafting hellring.
There is guaranteed drop of hellring material at MP10.

Loot is always individual. Hellring materials are account bound.

If you need a hellring, then yes, hunting key is the only route for infernal machine.
By the way, make sure you've got the plan too (from keywarden at A4).