I am a bit confused on channels

How do I become a member of my favorite channels?

Cofounder @curated | Builder and Fine JPEG Collector | Mint a meme by casting frameme.xyz

What channels do you want to become a member of?

base-builds

frames-devs

frames

Gen Art

/base-builds /frames-devs /frames /gen-art and a few others

I guess just an overall question around membership — seems like now it requires getting an invite right?

Yes. Anyone who was active in those channels automatically got invites. I'd message the owner for now.