docs: Promote pipx to install Meltano (meltano#7639)

Co-authored-by: Taylor A. Murphy <taylor@meltano.com>
Co-authored-by: Edgar R. M. <edgar@meltano.com>

docs/src/_getting-started/installation.md

@@ -10,27 +10,30 @@ Before you can use Meltano, you’ll need to get it installed. We have a [comple
 
 ## Install Meltano
 
+Use the following command to check that you have a supported Python version installed:
 
+```bash
+python --version
+```
 
-{% tabs log %}
+Meltano supports all versions of Python that have not yet reached their end-of-life date. Refer to [the official Python documentation for when versions of Python will reach end-of-life](https://devguide.python.org/versions/).
+
+<div class="notification is-warning">
+  <p>Not all plugins support the latest versions of Python.</p>
+</div>
 
-{% tab log Using Pip %}
+{% tabs log %}
 
-Meltano is pip-installable.
+{% tab log Using pipx %}
 
-Use the following command to check that you have a supported Python version installed:
+Since Meltano is an application, it should always be installed into a clean virtual environment without any other packages installed alongside it.
 
-```bash
-python --version
-```
-Currently Python 3.7, 3.8, 3.9, 3.10 and 3.11 are supported. Some plugins do not yet support Python 3.11.
+To simplify installing Meltano into a clean virtual environment, [`pipx`](https://pypa.github.io/pipx/) can be used to install Meltano instead of `pip`. `pip` is a package installer that comes automatically with Python. `pipx` is a wrapper around pip which cleanly installs executable Python applications (such as Meltano) into their own virtual environments.
 
 <div class="termy">
 
 ```console
-$ pip install --upgrade pip
-Requirement already satisfied.
-$ pip install "meltano"
+$ pipx install "meltano"
 ---> 100%
 successfully installed meltano
 ```
@@ -40,9 +43,10 @@ successfully installed meltano
 {% endtab %}
 
 {% tab log Using Docker %}
-We maintain the `meltano/meltano` Docker image on Docker Hub, which comes with Python and Meltano pre-installed.
 
-To get the latest version of Meltano, pull the latest tag. Images for specific versions of Meltano are tagged v<X.Y.Z>, e.g. v1.55.0. Add a `-python<X.Y>` suffix to the image tag to change the python version, e.g. latest-python3.7.
+We maintain [the `meltano/meltano` Docker image on Docker Hub](https://hub.docker.com/r/meltano/meltano/tags), which comes with Python and Meltano pre-installed.
+
+To get the latest version of Meltano, pull the latest tag. Images for specific versions of Meltano are tagged `v<major>.<minor>.<patch>`, e.g. `v2.19.0`. Add a `-python3.X` suffix to the image tag to change the python version, e.g. `latest-python3.9`. To get the latest minor or patch version, omit that value from the version number, e.g. `v2` for the latest Meltano `v2.*.*` image, or `v2.19` for the latest Meltano `v2.19.*` image
 
 <div class="termy">
 ```console
@@ -53,34 +57,33 @@ Status: Downloaded newer image for meltano/meltano:latest
 docker.io/meltano/meltano:latest
 
 $ docker run meltano/meltano --version
-meltano, version 2.7.1
+meltano, version 2.19.0
 ```
 
 </div>
 
 {% endtab %}
 
-{% tab log Using PIPX %}
-Meltano is pip-installable.
+{% tab log Using pip %}
 
-Use the following command to check that you have a supported Python version installed:
-
-```bash
-python --version
-```
-Currently Python 3.7, 3.8, 3.9, 3.10 and 3.11 are supported. Some plugins do not yet support Python 3.11.
+Meltano provides a Python package that can be installed using `pip`.
 
-Pip is a package installer that comes automatically with Python 3+. [pipx](https://pypa.github.io/pipx/) is a wrapper around pip which cleanly installs executable python tools (such as Meltano) into their own virtual environments.
+<div class="notification is-warning">
+  <p>To avoid dependency conflicts, please ensure Meltano is installed into a clean Python virtual environment.</p>
+</div>
 
 <div class="termy">
 
 ```console
-$ pipx install "meltano"
+$ pip install --upgrade pip
+Requirement already satisfied.
+$ pip install "meltano"
 ---> 100%
 successfully installed meltano
 ```
 
 </div>
+
 {% endtab %}
 
 {% endtabs %}