He he, this brings back some memories...
My first job was at age 11 when my dad sent me as an apprentice in a metal working shop, no pay.
My first paying job at age 16 was at an offset printing shop, you spend some time setting everything up, then sit back and watch to make sure that prints come out right and if needed correct the flow of ink or whatever, at the end of the day you clean everything up. I remember that there was some kind of cream that you put on your hands before you start to prevent the ink from sticking on and helps in cleaning.
I got my first pay (cash in an envelope) on a Saturday when we worked only half a day, I went straight downtown and spent it all in a violin, which I still have but have never been able to play, the harmonica is so much easier to play and carry...
Luis