Where do I find out what it takes to be a hero?

Hint 1 of 6:

Everyone in Ankh-Morpork seems to have their own ideas as to what it takes to
make a hero.

Hint 2 of 6:

Just try asking around town, and you should get all of the pieces that you
need.

Hint 3 of 6:

The guard will tell you that you need a birthmark, a mask, and a spell.

Hint 4 of 6:

The old-timers in the town square tell you to get a posing pouch.

Hint 5 of 6:

The warrior in the square tells you to get a sword that goes "ting" and a
moustache.