Mission: Spy on the charr army and report your findings.
Bonus: Retrieve and return 4 pieces of armour.
Start and end of mission.
Parts of kiln's armour.
Kiln Tribute (bonus starter).
Start of cinematic.
End of cinematic (follow the path back to start).

This is for most people the first mission.
This mission is not to taxing as long as you are 6th level or better.
Like most parts of this game you need to have skills in place and know how to use them no matter what the profession.
When I first attemp a mission I like to do it with the henches this way I can avoid being the "NOOB" in the group and I won't be suprised.
If this is your first Toon or Character in the game as guild leader I recommend you do it with out guild help.
Why? well the skills are the real hard part of the game you have to figure out what skills work and how they work and having a 20 level guild member fast tracking you thru a mission will not help you.
Now a Guild member with a similar level Char/Toon this is good as it premotes team work and you can discuss a stragy that will help in doing PVP and GVG later on.

Stepping off soap box.

Thru out this area are small batches of char always aim for the healer first and then the mesmers if you focus your team on one enemy at a time this will go fast.
On your way thru the area look for piles of rubble that are searchable to gain the bonus items you need to give the ghost (see above). This will save time.
Do this as a group because the items will be a drop and some times it will be for a different member of the party then who opened it.
Avoid the Square area showing the where the cut sceen starts as it will not be possible to get the bonus after this begins.
That is about it. One thing for those who want to put your skills to the test in run back (I recommend this only for those who have the mission completed.) on the run back to report your findings stop at the intersection where the char are trying to catch you stop there and fight the char for those still 10 lvl and under it is good xp per kill and you can pull some good drops.