diff --git a/README.md b/README.md
index ca1e22f..b40a3c9 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,33 @@
 
 The Matrix SDK in Elm allows users to communicate with other instances using
 the [Matrix](https://matrix.org) protocol.
+
+The Elm SDK serves as a more consistent alternative to the
+[matrix-js-sdk](https://github.com/matrix-org/matrix-js-sdk/), which is a
+JavaScript implementation of the Matrix protocol with several downsides. In
+contrast, the Elm SDK supports:
+
+- ✅ **Matrix spec version adjustment** based on which spec version the
+homeserver supports. The matrix-js-sdk spec uses endpoints from legacy versions
+and exclusively supports the latest 4 spec versions, while this SDK listens to
+the homeserver's supported spec versions and talks to the server accordingly.
+See [docs/supported.md](docs/supported.md) to discover which interactions are
+supported for which spec versions.
+
+- ✅ **One way to do things** instead of having multiple functions that are
+considered deprecated.
+
+Follow us on [Mastodon](https://social.noordstar.me/@elm_matrix_sdk) at
+@elm_matrix_sdk@social.noordstar.me to stay up-to-date on the latest changes.
+
+## How to install
+
+In your terminal, run
+
+```sh
+elm install noordstar/elm-matrix-sdk-beta
+```
+
+Keep in mind that the beta versions are intended to develop rapidly. You should
+not expect the versions to remain reliable for years! If you need a stable
+version, please wait around for a full version.
diff --git a/docs/supported.md b/docs/supported.md
new file mode 100644
index 0000000..7021b79
--- /dev/null
+++ b/docs/supported.md
@@ -0,0 +1,15 @@
+# Supported features in spec versions
+
+The Matrix spec frequently releases new spec versions. Most features are
+supported in the Elm SDK on most spec releases, but not all endpoints exist
+for every version. For example, in very early versions you couldn't even get
+the content of an event!
+
+This document specifies which features you can expect to work for which spec
+versions. This can help you decide whether the SDK will interoperate with your
+homeserver, or that it may be better to not rely on a specific feature.
+
+---
+
+Considering that the current version does not support interaction with a
+homeserver, no functionality is supported at any spec version.
diff --git a/src/Matrix.elm b/src/Matrix.elm
index 825ab22..74779dd 100644
--- a/src/Matrix.elm
+++ b/src/Matrix.elm
@@ -4,9 +4,9 @@ module Matrix exposing (Vault)
 This first version forms a mere basis from which we will create iterative builds
 that slowly improve the codebase.
 
-It is generally quite unusual to do this on
-the public registry, but it is also generally quite unusual to only support a
-monolithic public registry. (:
+It is generally quite unusual to regularly publish iterative beta versions on
+the public registry, but it is also generally quite unusual to exclusively
+support a monolithic public registry. (:
 -}
 
 {-| The Vault type stores all relevant information about the Matrix API.