Follow up updates to CLI install doc (#2257)

Author: abrennan89

docs/install/install-kn.md

@@ -4,22 +4,33 @@ weight: 10
 type: "docs"
 ---
 
-## Install `kn` using the nightly executable binary
-To install the `kn` Client, you must download the executable binary for your system. Links to the latest nightly executable binary are available here:
-  - [macOS](https://storage.googleapis.com/knative-nightly/client/latest/kn-darwin-amd64)
-  - [Linux](https://storage.googleapis.com/knative-nightly/client/latest/kn-linux-amd64)
-  - [Windows](https://storage.googleapis.com/knative-nightly/client/latest/kn-windows-amd64.exe)
+This guide provides details about how you can install the Knative `kn` client (CLI) using various methods.
+
+## Install `kn` using an executable binary
+
+To install the `kn` Client, you must download the executable binary for your system. Links to the latest stable executable binary releases are available on the [`kn` release page](https://github.com/knative/client/releases).
 
 You must place the executable binary in your system path, and make sure that it is executable.
 
-## Install `kn` using Go
-1. Check out the [Client repository](https://github.com/knative/client).
-1. Run the command:
-  ```bash
-  go install ./cmd/kn
-  ```
+### Install `kn` using nightly executable binary
+
+Nightly executable binaries are available for users who want to install the most recent pre-release features of `kn`. These binaries include all `kn` features, even those not included in the latest stable release.
+
+**WARNING:** Nightly executable binaries include features which may not be included in the latest stable Knative release, and are therefore not considered to be stable.
+
+To install the `kn` Client, you must download the executable binary for your system. Links to the latest nightly executable binaries are available here:
+
+- [macOS](https://storage.googleapis.com/knative-nightly/client/latest/kn-darwin-amd64)
+- [Linux](https://storage.googleapis.com/knative-nightly/client/latest/kn-linux-amd64)
+- [Windows](https://storage.googleapis.com/knative-nightly/client/latest/kn-windows-amd64.exe)
+
+You must place the executable binary in your system path, and make sure that it is executable.
 
 ## `kn` container images
-The `kn` container images are available here:
+
+The `kn` container images are available for users who require these for additional use cases. For example, if you want to use the `kn` container image with [Tekton](https://github.com/tektoncd/catalog/tree/master/kn).
+
+Links to either the nightly container image or the latest stable container image are available here:
+
 - [Nightly container image](https://gcr.io/knative-nightly/knative.dev/client/cmd/kn)
 - [Latest release](https://gcr.io/knative-releases/knative.dev/client/cmd/kn)