I've been in the DSA for a bit over a year and it's been wonderful. We've made meaningful wins for people and are steadily growing. Our chapter is beginning caucus more which is exciting because it means more opportunities to engage with the national conversations and do necessary political education.
The core of my chapter is mostly ML's though we have a right wing contingent that I am hoping we can persuade if we could get some of them to read a goddamn book. There are serious growing Marxist factions on the left of DSA that are gaining a lot of traction quickly and it's an exciting time imo.
Anyway go to some of your local chapters meetings and see what they're doing. An organizer will 100% reach out and talk to you if they are competent. It can be daunting to get started but it is extremely rewarding.