You need to memorize each of these pandas functions.

It's suggested that you write them all donw longhand, add summary of what the function does, in your _own words._
Then create a 3by5 flash card for each one.

- loc()
- iloc()
- head(n)
- tail(n)
- info()
- shape
- columns()
- rename()
- isnull()
- sum()
- fillna()
- dropna()
- describe()

Pandas Cheat Sheet -> https://pandas.pydata.org/Pandas_Cheat_Sheet.pdf