This tutorial demonstrates how to create an OCR communication app using React and Tesseract.js, an open-source OCR library that supports over 100 languages. The app allows users to upload images, perform OCR processing on them directly in the browser, edit the recognized text as needed, and send it as an SMS to a specified phone number. The tutorial is divided into two parts: part 1 covers project setup and front-end development, while part 2 covers back-end development and testing of the app. The app's structure includes a front end for displaying image upload buttons, OCR processing buttons, text editors, and SMS sending fields, as well as a back end using Node.js and Express to handle the SMS sending process.