How are totalitarian regimes different from authoritarian ones?

Authoritarian – based on the cult of the personality of one person, for example, Stalinism.
Totalitarian – state intervention in all spheres of activity of its citizens and the desire for complete control over them. As in the USSR, starting with the Octobrists, the pioneers, the Komsomol, the party. They never exist in their pure form, and these features are present in democratic countries.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.