Here I go with yet another of my don't-get-the-syntax-problems. For some reason I tend to get a lot more from putting a question here than reading through a few dozen pages of documentation, which I have once again done.
Say I have a dictionary as a basic data structure in a program. I'd like to be able - as a user input - to add additional keys to existing values and additonal values to existing keys. Everything I read feels like it comes almost to the point of explaining it and then says something like "And that's all of it".
Any hints would be great!