seriously. it's not that big a deal. if people in gaza are still standing up to their oppressors every day then you likely have zero excuse for not doing more IRL shit (political reading and writing at home are good, but don't mean anything if you're not applying that theory as practice and then assessing the results and adjusting your practice accordingly).
Figure out the communist and communist-aligned groups in your area, get on their mailing lists, turn out to do the things they ask of you sometimes. Try to make a compromise between good politics, successfully doing things in the real world, and being a larger org. Find out which orgs meet those criteria by going to their things. Once you're sure which org(s) are good, ask them how you can get more involved.
Let's get this one out of the way: what are peoples hot takes on these orgs off the top of my head?
DSA: Libs who don't really get anything done except tell you to vote for AOC (and they can't even control their elected candidates) and Biden
WFP: Completely fucked up by supporting Warren in 2020
Local Democrats: Might as well CW yourself
CPUSA: Fed central
Got any hot takes about the IWW?
There are a few decent DSA chapters and some good people in the org but as a whole it sucks. I learned a lot from my time in it and met some interesting people so I would say if you're trying to learn it's your best option on that list but understand that they are far from revolutionary, totally undisciplined, and questionably principled at best.
DSA captured org that's sucked a massive shit ton of leftist potential and threw it away on the Does Not Care
party. Whose elected members are absolute betrayals of the ideals they set up to do. They did not bring the ruckus to the DNC they are collaborators with the prison wardens.
WFP - also
collaborators. Not very independent. Bunch of 
Local Democrats - worst
pieces of shit on the planet who have no trouble calling the 
if you call them out on their corruption and fascism. Local parties have the least amount of transparency in the country and they like to keep their gentrifying grift that way. Who do you think manipulted the 
primary votes to change for 
?
CPUSA - captured
collaborators.