Data wrangling is often considered not a beautiful task, to put it nicely. But the skillset is an immensely important one, according to me. It opens new doors in places.
Python is a good scripting language for that purpose. SQL is also helpful (AFAIK). Where to learn all about data wrangling? Are there books, courses, tutorials?
What other tools or languages can one learn for the purpose?
If you are not averse to the R language, https://r4ds.hadley.nz/data-tidy is a good resource for skills and ideas that generalize beyond "tidyverse" and R.