What skill did charles dickens learn while attending event school in the evenings his as a reporter?

He learned to write in a code called shorthand.
Shorthand is a very useful skill for reporter because it allows them to get all full statement for sources who are speaking.
If the reporters tried to record it words by words, they may not be fast enough to record the full context of the information.

In my words I think racism is hating someone just where they come from or the race/skintone I don’t know maybe I am wrong

Hope it helps