Lenin is fairly ill-served by biographers. A good many of his biographies drift between two poles. One line, especially common in American conservative circles, is to portray Lenin as the beta test version of Stalin. It was a very common interpretation during the Cold War and one that still enjoys a degree of currency in today. The other pole defends Lenin and his ideals as the antithesis of Stalinism. This is a fairly common approach in various leftist circles and has its roots back to Trotsky who argued that Stalin was a perversion of what Lenin intended. Neither of these poles though really does much justice to the man and they often generate more heat than illumination.

There is Beryl William's Lenin which is part of Longman/Routledge's Profiles in Power series, which are intended as introductions for students. James D. White's Lenin: The Practice and Theory of Revolution is a good text that describes how Lenin sought to square his theories with the more complicated reality. Those two books do help round out knowledge on Lenin and this period.

Николай Ленин: Сто лет после революции : 2331 отрывок из произведений и писем с комментариями

Дмитрий Евгеньевич Галковский

But there isn't English translation of this.