Before I share “all the things” think about what YOU want to do with the membership.
Make a list of what you want to offer.
If it’s as simple as bonus content, or creating a private RSS feed, then something like Patreon or Glow is awesome.
If it’s based on community, then something like Mighty Networks would be great (or WP plug-ins like this)
See what I mean?
There is no one platform that can do all the things, and there’s also a difference between membership and monetary support via crowdsourcing.