This tutorial by Miguel Grinberg explains how to send emails with embedded GIFs and images using SendGrid and Python. To get started, users need to create a new directory, set up a Python virtual environment, install the `sendgrid` package, and configure their SendGrid account. The tutorial then provides two methods for embedding images in emails: using image links and using inline attachments. The first method involves uploading an image to a public server or S3 bucket and linking to it from the HTML email, while the second method involves including the GIF file as an inline attachment with a base64-encoded string. The tutorial concludes by providing examples of both methods and encouraging readers to try them out.