I'm an avid armchair historian and the books I've read on revolutions such as the American, French, Russian, etc., describe the actions and reasons for the revolutionaries, as expected. I'd like to find out more about how revolutions such as these, as well as others, hewed to the original vision or drifted away from that of the originators. Also, how and why were co-revolutionaries disposed of even though they had played important roles. There seem to be commonalities among revolutions and I'm interested in "comparative revolution" studies. Any recommendations for books that look at revolutions in general from these perspectives (and other related ones) are welcome!
I'd highly recommend The Russian Revolution by Trotsky. It's a weird one because it's written very much like a history book, despite the writer himself being one of the central figures of what was to come in the revolution. It has no citations and very rarely does Trotsky source a lot of what he is stating, but that is what makes it so interesting and why I think it perfectly fulfills what you're looking for. It gives unique insight into the bolshevik perception of what was to become their own revolution, offers up the most complete justification argument for the revolution, and also beneath the surface exposes a lot of the complications that would come to haunt the young soviet state, sometimes intentionally, sometimes not.