I've attended a 1,5 day course the past days… the course was about learning how to use The Customs Tariff system and it was held by the Swedish Customs. It's my client who offers the course for it's employees/consultants.
It was quite interesting to learn and now I know all the difficulties in putting the right (import and export) code on merchandise traveling between countries. I'm glad I'm not going to work with that on a daily basis though because that required some major brain activies in regards to what codes to choose and why, etc etc. Not to mention how hard these texts are to read… "old" Swedish most of the time and not easy to understand at all. At least I have a better grasp of it now than I did yesterday morning! :)