Excel is a basic tool for almost every smaller company and huge corporation. It serves as a tool for analysis or optimization of daily work, environment for databases or creating templates. The purpose of tutoring with me is not a series of lessons in which you look as I write formulas, but to achieve some understanding of how Excel works. I would like to become superfluous after a few lessons - I would like you to be able to discover Excel yourself. About me: Biotechnology and Industrial Management graduate at Technical University of Lodz. My big passion is Data Science and Business Intelligence. I was working for Philips, currently I am intern for NATO.