To get to the Borean Tundra, start outside Ogrimmar in Durotar and head west to the new zepplin tower at (41,18). The zepplin will take you to Warsong Hold in the Borean Tundra. Start by taking Hellscream's Vigil.

If you have Master First Aid with skill 350+, stop by the second level of Warsong Hold, go behind the staircase to Nurse Applewood at (41,54) and train Grand Master First Aid and Frostweave Bandage. (Use track Profession Trainer if you have problems finding her)

Pick up all the quests that become available:

• Taking Back Mightstone Quarry
• Taken by the Scourge
• Patience is a Virtue that We Don't Need
• Ride to Taunka'le Village
• To Bor'gorok Outpost, Quickly!
• Too Close For Comfort

Complete Taking Back Mightstone Quarry, Patience is a Virtue that We Don't Need, Taken by the Scourge around the perimeter of Warsong Hold. Turn these in and pick up the follow up quests: Cutting off the Source, Bury Those Cockroaches, Untold Truths

You'll find the Nerubar Egg Sacs you need to destroy on the perimeter ramps and the location of all the sinkholes below. Near the third sinkhole you will find Shadowstalker Luther at (40,52) for Untold Truths. Turn this in and accept Nerubar Secrets. South Neru'bar Sinkhole - (41,58) East Neru'bar Sinkhole - (44,56) West Neru'bar Sinkhole - (39,52) North Neru'bar Sinkhole - (41,50)

Return back to base and turnin Cutting off the Source, Bury Those Cockroaches, Nerubar Secrets, and take Wind Master To'bor and Message to Hellscream.