People who don't read and cannot comprehend simple instructions should not be allowed to play this game. Here are the answers.

1) Dor'Danil is in Ashenvale. Almost directly South of Splintertree Post and almost to the mountains. The area it's in is called Felfire. (If you are Horde you've FLOWN OVER that area many times)
http://www.goblinworkshop.com/mapper.html?AreaID=253&RecordID=5672&Type=1

2)Dor'Danil looks like a little house with a path that leads deep down underground. It's a little confusing inside but once you get your bearings you'll find the book on a table on a raised circular area.

3)The "GOT STUCK IN A CROUCH BUG", my advice is either tough luck and start it again or tell a GM.

4) When you return the book to Braug Dimspirit, FOR THE LOVE OF ALL THAT IS WARCRAFT JUST READ THE DAMN BOOK! Don't be lazy, it has some interesting info in it.

5) Here's what to do when ANSWERING HIS QUESTION:
(READ THIS CAREFULLY!)
Talk to Him
The dialogue window opens.
There's a question and 4 answers.
Pick the right one.
The window automatically closes.
Now Talk to him again...
This time you see the SAME question and 4 answers again. DON"T CLICK AN ANSWER! WHY? you ask.
Because this time there's another option to pick. It has a ? mark beside it. CLICK THAT ONE!
CONGRATULATIONS!

6) If you are a level 30+ or have a couple of friends with you this quest should take less than a half hour. The hardest part is not getting lost.

7) Parqual Fintallas is in Undercity. Go to the "Apothecarium" (check your map). Once you're there you'll find him standing on the bridge. If you still can't find him turn the game off and sleep.

8) In the Scarlet Monastery (Yes this part will be much tougher with elites and whatnot so you may have to level up a bit before continuing) the book you are looking for is to the lower left of the red book in the picture at the bottom of this page.
http://mage.worldofwar.net/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=52

9) Give the Book to Parqual.He asks you a question. Follow the steps for answering him just like you did for Braug. Then head back to Thousand Needles for a reward.

REWARDS: CHOICE OF:
Dancing Flame (Wand) 32.1 DPS / 1.40 SPD / FIRE
Windstorm Hammer (1H Mace) 22.1 DPS / 2.10 SPD / 5 STA 4 STR
+ All of the XP you got from doing all the different parts of this quest!

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That's it. Done. If anyone still can't understand then by order of me you are no longer allowed to play World of Warcraft.

Break the CD's & Format your hard drive.

When you go in the house which leads into a cave follow the path down. When you reach the first junction turn left then take another quick left. If you follow this path it will lead to a little platform in the centre of the room and the book is on the table.

I have yet to see clear, simple directions regarding how to find the book, so I will do so myself.

Once you are inside the Dor'danil Barrow Den, follow the path until you get to the first large room. You should see one path leading down, one bridge going strait, and another bridge going right. Take the path that leads down, and then go left into the next tunnel.

Follow this until you reach the next large room, where you should see a central platform with a bridge leading strait and another walkway that goes to the lower level. The book is on a small rock podium on the central platform.

Dor'Danil is at (76,75)

neltharion is the quest answer

Entrance at about 73,76

There should be more quests like this which forces people to actually pay attention to lore stuff and rewards people who already do.

It shouldn't just be about loot and b.net kiddies spamming in Org. It should be a persistent world that the player could make an impact on.

Cords for the entrace is: 76,75

The "Legacy of the Aspects" is to be found all the way down in the cave, where Cavenclaw or what's his name spawn in the Teldrasill cave.

I could easily stealth down as a level 29 Tauren Druid in Catform, but I think fighting your way down may require some more manpower.