Jordan Kern takes you step by step in to the time series concepts with very clear and lucid explanation, He dwells quite a while on the concept of stationary versus non stationary.
Then he also has a really good explanation on what it means to decomposition.
Lecture 13 Time Series Analysis - Jordan Kern
In Continuation this following video covers Time Series Modeling
Lecture 15 Time Series Modeling - Jordan Kern
https://towardsdatascience.com/a-foray-i...a69dbbd76a
https://grisha.org/blog/2016/01/29/tripl...recasting/
Then he also has a really good explanation on what it means to decomposition.
Lecture 13 Time Series Analysis - Jordan Kern
In Continuation this following video covers Time Series Modeling
Lecture 15 Time Series Modeling - Jordan Kern
https://towardsdatascience.com/a-foray-i...a69dbbd76a
https://grisha.org/blog/2016/01/29/tripl...recasting/