Basics of Fountain Pens
Most fountain pen inks are not super water-proof. There are some that are more waterproof than others, but most have some limited resistance.
The faster you get water and soap on your hands, the better. If you know you are going to be doing inky work, and want to avoid inky hands, it's best to wear gloves.
Often when people start using fountain pens, they discover quickly after that not all paper is made equal.
One of the best features of the Kaweco Sport is that you can easily and quickly turn it into an eyedropper - enabling you to hold a ton of ink, and if you're using the clear demonstrator, have a moving air bubble in a tube of ink to keep you entertained during long meetings.
When I received my first fountain pen, it came with a single cartridge, and gift giver (Jon) included two extra cartridges.
In other parts of the world today, including Europe and Asia, and before my generation in North America, fountain pens were widely available in a much lower price range for both school-aged learning and everyday use.