The tutorial contains theoretical and practical material on the following topics: computer hardware and software, system software - operating systems, Linux OS overview, tools, antivirus programs; application software - word processors (on the example of OOo Writer, LyX), spreadsheets (on the example of OOo Calc), database management systems (on the example of OOo Base), computer mathematics systems (basics of working in Maxima), graphic editors (basic techniques in Gimp).