Probably all of your questions are answered in our blog:
I highly recommend reading each post that feels relevant to your questions.
Generally, we created "public key domains" that are censorship-resistant. You sign your DNS settings and place them into Mainline DHT (largest, most decentralized network in the world - it powers torrents).
Those DNS records can point to anything you want for the identity: a website, your posts, your files, your payment endpoints, etc.
Your key also allows you register sessions with one or more "homeservers" which can also be hosted, or self-hosted. This allows key delegation, and cold key storage.
If any of your DNS endpoints censors you, you can simply update the record to point to a new provider, or your own self-hosted server.