So basically what it says on the tin. Having watched a YouTube video recently on Russia (The Origins of Russian Authoritarianism by Kraut) I've found myself interested in Russian history, especially imperial Russia history, from the time of the Mongols up to the Russian Revolution. Any recommendations? Books don't need to cover the entire time period, I'm also interested in in-depth books on certain areas of Imperial Russian history, although books covering the entire period is appreciated. Thanks!
Since very few Anglophone researchers still study Russia pre-modern period now, it is not so easy to compile a good amount of recommendations. If you really don't mind the intimidating (physical) looking and look for an in-depth overview work, I'd even recommend the first and second of the total 3 volumes series of Cambridge History of Russia for nearly beginners.
As for medieval period (until 1480), you can also check my previous recommendation list in: Books on medieval Russia.