I would suggest following this path to learn Time Series analysis:
- Learn R programming since it has a lot of libraries to implement time series models
- Learn the basics of time series such as trend, seasonality, cyclicity
- Learn moving average and exponential moving average techniques
- Learn smoothing and exponential smoothing techniques
- Learn Univariate and multivariate time series analysis
- Learn ARIMA and ARIMAX models
If you are interested in Time Series Analysis, I recommend these data scientist where you can also learn all the above topics and hands-on exercises in Time series.
You can watch this video on Time series analysis in R to get started with Time series analysis