This is simple as all the quests can be found at the Nesingwary Base Camp. Here's the quests you'll need to complete:

1. Need an Engine, Take an Engine - This is the first part of the 2 tier chain to open the flight path. You'll need to bring back a Flying Machine Engine to Weslex Quickwrench at Nesingwary Base Camp. The engine is at 38,56 near Monte in the tree.
2. Have a Part, Give a Part - Pick up 7 Venture Co. Spare Parts laying around 33,48.
3. Venture Co. Misadventure - Complete this one at the same time as Have a Part, Give a Part as you need to kill 15 Venture Company members.
4. Wipe That Grin Off His Face - Kill Foreman Swindlegrin and Meatpie in the Venture Company site. Both are at 35,50. Meatpie patrols the wooden ramp and the Foreman is at the top.

Completing these will open 3 different "Mastery" type quests. These are almost like the ones found in both Nagrand and Stranglethorn Vale.

Rhino

1. Rhino Mastery: The Test - This is easy, just kill 15 Shardhorn Rhinos. Most of the are around Nesingwary's Camp.
2. Rhino Mastery: The Chase - Speak with Oracle Soo-rahm at 25,66.
3. The Bones of Nozronn - Use Soo-rahm's Incense near the Bones of Nozronn. The bones are at 26,72, it's pretty hard to miss! There will be a little incense burner near his head that you click on.
4. Rhino Mastery: The Kill - Bring Farunn's Horn back to Hemet. You need to kill Farunn who's located at 47,44. He doens't look any different from the other rhinos.

Dreadsaber

1. Dreadsaber Mastery: Becoming a Predator - Just kill 15 Dreadsabers. They are in the same area as the rhinos near the camp.
2. Dreadsaber Mastery: Stalking the Prey - Identify 3 Shango Tracks. These are clickable marks in the sand near 40,43. Some will not be Shango tracks so be patient if it doesn't work everytime.
3. Dreadsaber Mastery: Ready to Pounce - Bring Shango's Pelt to Buck Cantwell back at the Nesingwary Base Camp. He's around 34,32 and looks like all the other Dreadsabers.

Note: In order to open up the Crocodile chain, you'll need to first complete Rhino Mastery: The Test and Dreadsaber Mastery: Becoming a Predator.

Crocodile

1. Crocolisk Mastery: The Trial - Kill 15 Mangal Crocolisks. The crocs are around the river near the Nesingwary Base Camp.
2. Crocolisk Mastery: The Plan - Collet 5 Sandferns and bring them back to Debaar at the Nesingwary Base Camp. They are found around sandy areas. Most of them are around the Shango tracks (40,43)
3. Crocolisk Mastery: The Ambush - Use the Sandfern Disguise to lure out Bushwhacker, kill him and collect his jaw. He's at 46,53 near Lakeside Landing.

Now Hemet will give you In Search of Bigger Game and send you off to Dorian Drakestalker at 42,28. He has a few quests you must complete before Post-partum Aggression. Here's what you need to do first:

1. Securing the Bait - Bring 6 Primordial Hatchlings back to Dorian. They are in the fiery forest nearby. Killing the eggs will spawn the hatchlings, but be sure not to attack them! Just click them to loot.
2. Sharpening Your Talons - Kill 6 Primordial Drakes. Complete this along with Securing the Bait. The drakes are flying around the trees.
3. Reagent Agent - Bring 5 Twisted Roc Talons to Colvin Norrington at Dorian's Outpost. These drop off of the birds around 56,27.
4. My Pet Roc - Bring 7 Roc Eggs to Zootfizzle at Dorian's Outpost. Do this one with Reagent Agent! All you need to do is collect the eggs near the birds at 56,27. They are inside little nests.
5. A Mammoth Undertaking - Bring a Shattertusk Mammoth to Zootfizzle at Dorian's Outpost. Use your Mammoth Harness on a Shattertusk Mammoth and ride it back to the camp. Easy!

Completing all of these will open Post-partum Aggression. You have to kill Broodmother Slivina and return to Dorian Drakestalker at Dorian's Outpost. Hemet rides on the mammoth with you! Silvina is located at 47,30. The mammoth has a few abilites, like charge, that you should use to your advantage! Also, be sure you signal Hemet to attack so he can also lay down traps. This is an easy quest and if for some reason your mammoth dies, just finish her off and it will still count. She has less than 35k health.