private sharing rewrite

docs/core-features/sharing-private.md

@@ -4,31 +4,29 @@ sidebar_position: 0
 # Shares - Private
 
 `zrok` was built to share and access digital resources. A `private` share allows a resource to be 
-shared through a __privately__ available endpoint. Sharing a resource with `private` is __a differentiating__
-feature of `zrok`.
+shared through a __privately__ available endpoint. Privately shared resources can only be accessed by another `zrok` user who has the details of your unique share. 
+
+Sharing a resource with privately is one of the things that makes `zrok` unique.
+
+`zrok` also provides `public` sharing of resources with non-`zrok` users. Public resource sharing is limited to only resources that can be accessed over `HTTP` or `HTTPS`.
+
+Here's how private sharing works:
 
 # Peer to Peer
 
 ![zrok_public_share](../images/zrok_private_share.png)
 
-A `private` share will require `zrok` to access the share and will also require a special shared 
-secret token. This access token, combined with the `zrok access` command will be how the private share is accessed.
+`private` shares are accessed using the `zrok access` command, and require the accessing user to have a working (and `enable`-d) `zrok` account on the same service instance where the share was created.
 
-Sharing something with `private` is similar to sharing something publicly. The main difference is
-obvious, the shared resource is `private` and the share is __not__ open to the public. With `zrok`, you
-can share resources on a private network without needing to expose the service to the internet. The share is not 
-through an obfuscated, difficult to guess url. Instead the sharing is accomplished using a secure, zero trust overlay
-network provided by [OpenZiti](https://docs.openziti.io/docs/learn/introduction/). With this private, peer to peer 
-sharing model, there will never an attack surface available to the open internet.
+The `private` share is identified by a _share token_, which uniquely identifies your share. The accessing user will use the share token, along with the `zrok access` command to create a local endpoint on their system, which let's them use the shared resource as if it were local to their system.
+
+`private` sharing does not require you to open any firewall ports or otherwise compromise the security of your local system; there is never an attack surface open to the public internet.
 
 The shared resource can be a development web server to share with friends and colleagues or perhaps,
 it could be a webhook from a server running in the cloud which has `zrok` running and has been instructed
 to `access` the private resource. What matters is that the access to the shared resource __should not__
 be done in a public way, for more secure access.
 
-Using `private` shares is easy and is accomplished using the `zrok share private` command. Run `zrok share private`
-to see the usage output and to further learn how to use the command. 
+The peer-to-peer capabilities of `zrok` are an important property of the underlying [OpenZiti](https://docs.openziti.io/docs/learn/introduction/) network that `zrok` uses to provide connectivity between users and resources.
 
-Unlike public shares, `private` shares do not need to be [reserved](./sharing-reserved.md) to be predictable. When sharing a
-resource with `private`, the resource is shared at a known location. Resources shared with `private` do not
-need to be `reserved`.
+Using `private` shares is easy and is accomplished using the `zrok share private` command. Run `zrok share private` to see the usage output and to further learn how to use the command.