I would start with Robert Massie’s classic book “Nicholas and Alexandra” which is about the Romanovs. It explains the basic background of Russian governance from as far back Catherine the Great and shows how Nicholas II—by most accounts a generally nice man and loving father—was ill-prepared as a leader especially during the Great War. When their son Alexy, the heir to the throne, was born a hemophiliac, Alexandra’s concern about his condition led her to consult the “mystic monk” Rasputin and the politics, palace intrigue and violence that follows is among history’s greatest and most epic stories.
A good follow up is “10 Days That Shook the World,” the definitive first person narrative of the revolution written by reporter John Reed who got a little too caught up in the mayhem, blurring the lines between journalism and activism. Reed became the first American to be buried at the Kremlin.
If you’re a movie fan check out “Reds” (1981) which was Warren Beaty’s adaptation/biography. Despite being talky and a bit melodramatic in the romance, “Reds” has some really potent imagery. It accurately shows how there was really no solid post revolution plan and these leadership vacuums led to further chaos and disorder. The movie was praised by critics but rejected by audiences at the time. However it’s stature has grown over the decades.
I recently read Sheila Fitzpatrick's history of the Russian Revolution. It's called, creatively, The Russian Revolution. I found it to be excellent. Sheila is a major scholar of the field and involved in some of the most important debates about Stalinism. This book is meant to be a scholarly introduction to the subject, so she lays out these dabates and the further readings are very thorough.
I would recommend anything by the historian Helen Rappaport. She focuses on the last days of the Romanov family. Some of her titles include The Romanov Sisters and The Race to Save the Romanovs. I also enjoyed Lenin's Private War by Lesley Chamberlain, it's about the Russian intellectuals that escaped Russia for Western Europe during Lenin's rise to power.