The sign is written in very small print:
Welcome to the combat training room!
Unforunately, our combat teacher is no longer with us, but don't let that discourage you.
To the west is the way back to the training shed.
In here, you will find a potion of health and a potion of mana. If you ever run out of either, return here and use potion of health or use potion of mana to restore you a bit.
Now, let us get to the essence of battle.
To the east is a small chamber where a modest creature awaits you. If the creature is dead, then wait for a while and it will come back to life.
Examine it to find out what you should do next.
The door to the north is for the magically curious.