I should probably ignore this post because you are obviously a spoiled little brat, but you know what, I'm going to prove you wrong.
The adventurer coupon is given to all new adventurers, along with directions on what to do with it and where. If you look in your map, and look under markers it will show you exactly where the npc that you need to trade it to is located. I don't know the name/locations off hand, but you should be able to figure it out just fine if you paid any attention in the game instead of shooting your mouth off on these boards.
Hope that helps, now go read the manual.