The operating system Windows (8x, Me, XP) is free in the file structure
Navigating, mastering the introduction of new consumer programs into the system.
System cleaning and maintenance with anti-virus programs.
Good knowledge of office programs (MS Word; MS Excel, MS Powerpoint, MS Outlook), perfect use of archivers (RAR, ZIP), other programs: MathCad, internet navigation programs MSIE, Opera, Firefox, Chrome.