When to use dictionary/list, numpy, panda?
Simple to least simple --> 

reasons to start using numpy:
    1. data is 2-dimensional or higher
    2. need to perform a bunch of numerical calculations
numpy mathematical functions: https://numpy.org/doc/stable/reference/routines.math.html 

reasons to start using panda:
    1. need to merge multiple data sets with each other / do reshaping of data
    2. need to import/export data to specific file format like Excel, HDF5 or SQL
panda reshaping: https://github.com/pandas-dev/pandas/blob/main/doc/cheatsheet/Pandas_Cheat_Sheet.pdf 
numpyimport/export: https://pandas.pydata.org/pandas-docs/stable/user_guide/io.html