Didn't really love that video, since once again it's kinda vague advice. He mentions a few socialist organizations at the end but the whole video basically comes down to "find some local organization and join it".
Where things go after that depends on where you are, which only your local socialist orgs — and later yourself with enough experience — can figure out.
Well the Lenin dude managed to create an authoritarian regime in the name of the proletariat [yep, I wrote exactly what I meant] by orchestrating and doing the October coup. The revolution happened in February. Don't take my word for it, check it out yourselves. Some input for this research can be found in this 11min video. So, I don't see how taking advises from Lenin for action could lead to anything that's worth doing in practice.