Welcome to the communist Lemmy community! This is a community for all Marxist.
getting organized can be as simple as building strong relationships with allies. and there's no better way to make allies than giving aid and support to the people around you.
then, when shit hits the fan or action is needed, you won't be alone. in other words, sometimes you can stand up for yourself by standing up for others first.
That's an excellent start! I do recommend joining a Communist Party local to you, though, preferably one with national organization and international ties, or even just a labor union. Working class organization is a prerequisite to Socialism, we can't get there by hoping.