All of the Bolsheviks were well-read. Even their token thug, Stalin, was probably reading political theory at what we would describe as a doctoral level. While Lenin did not respect Stalin as an intellectual peer, we do know that he spent a great deal of time pouring over dense political tomes. No TV, radio, internet...people read books to entertain themselves.

But, to put a fine point on it, the Russian Revolution happened without Lenin or Trotsky. The Bolsheviks overthrew the February Revolution in a coup.