Essay Plans my friend.
The Tsardom and Communism topic is not at broad as you may think, so you can prepare questions that have a high chance of coming up.
Here are a few questions you may want to prepare for:
- Russia's Economy and working conditions during Nicolas II [Semi-Likely]
- Disparities between the rich and poor during the reign of Nicolas II [Unlikely]
- Causes of the 1905 Revolution [Likely]
- Nicolas II response to the revolution (Duma, Stolypin etc.) [Likely]
- Impact of the First World War on Russia [Semi-Likely]
- What led to the abdication of the Tsar [Highly Likely]
- Why the Provisional Government failed [Likely]
- October/November Revolutions (almost always a source question) [Unlikely]
- Impact of Lenin's Rise to Power [Likely]
- The Civil War Between the Reds and The Whites, and why the Reds Won [Semi-Likely]
- War Communism and the NEP [Likely]
- The Kronstadt rebellion (useful knowledge in relations to war communist)
- Stalin's rise to power [Likely]
- Stalin's Propaganda, The Cheka and his Cult of Personality (source question probably) [Semi-Likely]
- Stalin's Modernisation of the USSR and the impacts on the working class [Highly-Likely]
- Stalin and the Second World War [Semi-Likely]
Hope this helps in some way!