I think the most effective way is to choose a small sliver of socialism you’re most interested in — universal healthcare, public transit, state capacity — and to focus on that. Most of the “all the socialism, all at once” approaches are pretty well suppressed, and most people just switch off when they encounter the word. Find like-minded people who are focused on that sliver, and see what they need — someone to mod their discord, someone to rewrite their website, someone to edit the newsletter. The focus is banding together with people who can do the outdoors part and doing the work that can be done from your room so they can have more time to do the stuff that can’t.