The guide explores three methods for importing CSV files into PostgreSQL, emphasizing the importance of this process in data management. It first explains how to use PostgreSQL's pgAdmin GUI, detailing steps to navigate the interface and configure the import process. Next, it covers using raw SQL statements in the terminal, providing an example of a SQL COPY command for importing CSV data. Finally, the guide introduces n8n, a workflow automation tool, to automate the CSV import process, highlighting its advantages in saving time and enhancing efficiency for regular data imports. The guide suggests that while manual methods are suitable for one-off tasks, n8n provides a scalable and repeatable solution for ongoing data management needs, allowing users to automate tasks and focus on more productive activities.