To truly master this material, do not just read the textbook. Follow this immersion schedule:
Various research papers, such as the Handbook of Russian Information Warfare or reports by the Royal United Services Institute (RUSI) , discuss "lessons learned" from Russian military tactics or information operations. These "lessons" are often grouped by conflict (e.g., Lessons from the 2014 Crimea conflict). HANDBOOK OF RUSSIAN INFORMATION WARFARE russian institute lesson 19
If you are self-studying, you should complete these typical exercises to master the material. To truly master this material, do not just read the textbook