t the beginning of this master's thesis, personal data and the management of personal data, as well as information and digital content are defined. It describes how to organize digital content on your computer and in the cloud, and how to download and store content. Furthermore, passwords are mentioned, how to take care of them and it describes, more frequently used nowadays, two-step authentication. Also, there is talk about copies, how important they are to us, where they are stored and how to take care of them. The follow-up to the master's thesis describes the publishing and sharing content tools and describes how and to what extent to share your own digital content. Furthermore, the portfolio was briefly described as a map of student papers, and after that the e-portfolio was presented. E-portfolio talks about its purpose and types and briefly describes the tools for its development. The organization of e-portfolios, that is, the organization of its digital content, is very important, as described below. Furthermore, the work is particularly focuse on the tools necessary to build up Merlin e-portfolio. The process of making e-portfolios in the same system is shown below. Since in this age computer technology is very prevalent in education, the topic of e-portfolio is also found in the Curriculum of the Subject of Informatics for Elementary Schools, which states that the e-portfolio is a collection of digital works that the student produces during schooling with the purpose of monitoring progress. For that reason, at the end of this master's thesis, examples from the curriculum and textbooks, as well the ways in which students learn and create their own e-portfolio are listed.