In the 21st century, the critical thinking has become an alternative to the techno-centred way of modern thinking. With the use of digital technology skyrocketing in an daily life, the way we see modernity change. Being modern means being connected? Is it intergrating technology in all aspects of work? With algorithmic editorial logics, do we know how our ideas are shaped? Do we also know how to detect our own reasoning? The purpose of this notebook is to answer to these questions. The goal is to focus your attention on them. Its objective: guide you into developing a critical mind, a new prerequisite to learn and generate ideas in the digital era. in this notebook, there are comics and educational activities. You choose your reading path. Each story, each exercise will require an investment of time, concentration and effort to understand. Critical Thinking Notebook includes seven chapters. Each story proposes different themes and daily uses of critical thinking.