This is what you can do, out of delivery jobs or errands, in order to gain XPs and money.

Under Tyr - Faria's Passages.

Go to Sout West corner of Shadow Square, and investigate a barred door. Of course you have a crowbar, that you bought at the merchant close to North wall, so you are able to enter this place. You will find yourself in a first room where there should be a bed and a crate... When you walk on it, you will notice a number on the crate. Write it down and enter the place.
The goal is to take the passages following the order indicated by the number on the crate. Well, maybe you can use this map to help. You will meet there some Zombies, Sligs and Tyrian Slimes. You can bash some chests too, in order to find plenty of conches and leather drums.
If you have the Clockwork amulets, and if you are very lucky, maybe you will find some rift too, which will teleport you to Clockwork island! If ever you can find one, please not the exact location AND hour, I will pay well for this info $$.

Find Cloie, Dydrina's kank.

That's a easy one. Talk to Dydrina, West of Caravan Way, till she mentions that her favorite kank, Cloie, has disappeared. Then head to Defiled Desert, where you will find the silly kank in Northeastern corner. Harness it and go back to Caravan Way...

Protect caravans for Rolin.

Talk to Rolin, South of Caravan Way, and if you are experienced enough, he will propose you to protect some caravans in the Spyre area. Go there and wait, assuming you have Sanctuary on, or that you are Jamming Psionics, as some Dagorran could jump you and detonate your items... After a while you'll see a caravan passing, who is just being attacked by 4 Halfling Thieves! Slay those fools and get your reward at Rolin...

Pick some salt sample for Parik.

Talk to Parik, in Shadow Square, and he will propose you to get some salt in the Spyre area. Go there, wander around, and you will soon notice that Mageras doesn't like that you take salt, as 4 of them will jump you... Be sure that you have Free Action on, otherwise you are toasted! If you survive, take back the salt to Parik and get your reward. Note that if you cumulate this mission with Rolin's one, a group of 3 Halfling Thieves and 3 Mageras will appear and you'll complete the two quests at once.

Plant a vial fo Lednah.

Talk to Lednah, one of the three poor guys that lives in the Spyre area, and he will first ask you to bring him some components to make some kind of alchemy. Get them in Shadow Square, then he will ask you to plant a vial close to Noread. When doing that, be careful that Noread doesn't like that you stampede his glyphs! Go back to see Lednah, and you will discover that you have actually planted a bomb, that he'll activate... From there, each time you enter the Spyre area, you can plant a vial and complete this mini-quest again. Unfortunately Lednah and Noread can be killed so they are often missing.

Find Umlautus' daughter.

Umlautus is the rich widow that lives South of Caravan Way, and she doesn't stop being ransomed by some nasty thieves. Talk to her till she admits her daughter has been kidnaped, then talk to the caravan master for some more info, and head to the nomad camp in Three Sands, etc. Actually I'm not sure that you need talking to anybody else out of Umlautus herslef, as if you go to the purple area in Three Sands and just stand there for a moment, you will soon spot a group of villains (6 bandits) with some suspect luggage. Show them who's the strongest and get the poor daughter back to her mother...

Recover Gos' stolen cargo.

Talk to Gos in Altaruk, and he'll complain about some stolen cargo. Then head to the purple part of Three Sands, wait a moment, till you see a group of 6 women, probably the wives of the bandits mentionned above, carrying something suspect. Well, treat them as you did with their "husbands", recover the stolen cargo end get the reward from Gos...

Recover the Captain's necklace.

This one is already described There. It's rewarded 0 XPs anyway...

Find the magic mace.

This one I couldn't finish as I lost the char in a game bug before, and I could NEVER have it again! It's a story between Sinak (from house of Shom) and Prata. The mighty Ariol'ofTheWisp told me that you just have to recover a +1 mace.