Like, how did they manage to do such enormous task in terms of practical reasons, like the inner organization of the party, their main political goals, ways to create class consciusness, etc.
Also if there is a good read about it I would really appreciate it
the Bolsheviks definitely performed a vanguard function in relation to the other groups and held the general trust of the masses during the revolution, given their majority in the Soviets and the way the non-party masses would respect the parties' tactical directives published in Pravda. While they didn't single-handedly perform the revolution with their members, they built up a party that was able to co-ordinate and bind all the disparate masses, organised and not, into a cohesive strategy, which is all a vanguard party is really supposed to do.