56-57 Eastern Plaguelands

Return to Chillwind Camp > Target: Dalson's Tears
All Along the Watchtowers > Scholomance (skip Alas Andorhal for now)
Scholomance > Skeletal Fragments
Kill Skeletons from now on until you have 15 Skeletal Fragments

The Wildlife Suffers Too
Kill 8 Diseased Wolf

Kill Skeletal Terror for the rest of the 15 Skeletal Fragments
Kill Cauldron Lord Malvinious, loot Dalson's Tears Cauldron Key
Click the Cauldron
Target: Dalson's Tears > Return to Chillwind Camp

Click Mrs Dalson’s Diary in centre of barn
Kill Wandering Skeleton around the barn, loot Dalson Outhouse Key

Open the Outhouse
Locked Away
Kill Farmer Dalson, loot Dalson Cabinet Key

Open Locked Cabinet
Locked Away

Good Luck Charm > Two Halves Become One

Kill Jabbering Ghoul, loot Good Luck Other-Half-Charm
Combine the charms
Return to #7
Two Halves Become One

Run To Chillwind Camp
Return to Chillwind Camp > Target: Writhing Haunt
Skeletal Fragments > Mold Rhymes With...

Kill Cauldron Lord Razarch, loot Writhing Haunt Cauldron Key
Click Cauldron
Target: Writhing Haunt > Return to Chillwind Camp

The Wildlife Suffers Too > The Wildlife Suffers Too

Kill 8 Diseased Grizzly
The Wildlife Suffers Too > Glyphed Oaken Branch

Run to Eastern Plaguelands

Demon Dogs
Blood Tinged Skies
Carrion Grubbage
From now on (by the time you get to step #7):
Kill 30 Plaguebat
Kill Carrion Grub for 15 Slab of Carrion Worm Meat
Kill 20 Plaguehound Runt

Click Mangled Human Remains

Click Mangled Human Remains

Click Mangled Human Remains

Little Pamela > Pamela's Doll

Doll parts spawn as shown on map in the houses, they can vary as there are 2 possible spawns for each part.
Once you have all 3 parts, click one to combine.
Return to #5
Pamela's Doll > Auntie Marlene, Uncle Carlin

Run to Light’s Hope
Set Hearthstone in Light’s Hope Chapel
Zaeldarr the Outcast
Duke Nicholas Zverenhoff
Uncle Carlin > Defenders of Darrowshire
That's Asking A Lot > When Smokey Sings, I Get Violent
Minion's Scourgestones (turn in all Minion's Scourgestone to get friendly with Argent Dawn
Buy 5 Stacks of Enriched Manna Biscuit (Buy more later in Lights hope as needed)
Get Flight Path
From now on kill any Cannibal Ghoul, Gibbering Ghoul and Diseased Flayer, after they are dead talk to the spirit until you have 15 spirits freed.

Kill 5 Plaguehound

Kill 5 Frenzied Plaguehound

Kill all the Diseased Flayer here, there are more in Ghouls in Plaguewood if needed.

Troubled Spirits of Kel'Theril, skip the followup

Loot Large Termite Mounds for 100 Plagueland Termites while in Plaguewood.
Kill Ghouls until you have 15 spirits freed.
Destroy Scourge Structure 1/8 using Smokey's Special Compound

Destroy Scourge Structure 2/8 using Smokey's Special Compound

Destroy Scourge Structure 3/8 using Smokey's Special Compound

Destroy Scourge Structure 4/8 using Smokey's Special Compound

Destroy Scourge Structure 5/8 using Smokey's Special Compound

Destroy Scourge Structure 6/8 using Smokey's Special Compound

Destroy Scourge Structure 7/8 using Smokey's Special Compound

Destroy Scourge Structure 8/8 using Smokey's Special Compound

The Restless Souls > The Restless Souls (if you’re doing Stratholme later)

Run through cave to Tirion
Blood Tinged Skies
Carrion Grubbage
Demon Dogs > Redemption
Speak to Tirion
Redemption > Of Forgotten Memories

Click Loose Dirt Mound
Kill Mercutio Filthgorger, loot Taelan's Hammer
Head into the Crypt
Kill Zaeldarr the Outcast, loot Zaeldarr's Head
Loot Torn Scroll
Hameya's Plea
Hearthstone to Light’s Hope Chapel

Zaeldarr the Outcast
Defenders of Darrowshire
When Smokey Sings, I Get Violent
Fly to Chillwind Camp

I Highly recommend doing Scholomance and Stratholme quest runs now, (quests for Strat/Scholo are at Lights Hope Chapel, Chillwind Camp and outside Scholomance)

You can also Continue exclusively in dungeons even after completing quests to start farming Pre Raid BiS if you prefer this over questing in the world.

If you prefer questing normally then continue.