This tutorial explains the concept of time-series data and forecasting, its importance in today's rapidly changing society, and how to use InfluxDB and Prophet to build a forecasting model. It covers the basics of time-series data, including its collection and analysis, as well as more advanced topics like predictive maintenance and energy efficiency management. The tutorial also provides step-by-step instructions on how to set up InfluxDB, load data into it, and build a forecasting model using Prophet. Additionally, it discusses the flexibility of the Prophet model, including its ability to handle outliers and variations in time-series data. Overall, this tutorial aims to provide readers with a comprehensive understanding of time-series data and forecasting, as well as practical skills for building effective forecasting models.