As discussed in the course outline, the textbook for the course will be
Munkres' book is quite standard for a challenging undergraduate-level course in this topic. There are also many other undergraduate-level topology books, however, a few of which I'll name.
The following textbook has many nice examples, which I like a lot. It is out-of-print, but you may be able to find a copy on the internet.
Another recent textbook is by Waldmann, and looks fairly readable.
The next book I'll mention takes a somewhat different approach, introducing topology through combinatorial examples such as polyhedra and generalizations. If you're interested in these directions, you might like to look through this textbook.
A couple of other textbooks that come well-recommended, but which I haven't examined closely, are:
We will have a lively online discussion in the UP e-classroom system. Asking and answering questions of your peers will be of great benefit to your development.
Wikipedia has a number of articles on mathematical topics. They are mostly well-written and accurate, and many of the articles relevant to the content of Topology should be fairly readable.
The university's general covid page is at https://www.upr.si/en/university/covid-19--up/ . Current university regulations on the virus are at https://www.upr.si/en/university/covid-19--up/trenutni-veljavni-ukrepi .
The COVID-19 Sledelnik website has up-to-date information on the epidemic in Slovenia.
The Slovenia Times has news stories about Slovenia written in English, and can be helpful for keeping track of the (frequently changing) government regulations concerning the epidemic.
The Slovenian COVID-19 exposure-tracking app, while it hasn't been so widely used, may be worth setting up. Available at https://www.gov.si/teme/koronavirus-sars-cov-2/mobilna-aplikacija-ostanizdrav/ .