Reshaping: Rework "Getting Started" section

- Compress the previous pages "introduction", "create-user", and
  "connect" into a single page "getting-started".

- Divert ORM and dataframe content into dedicated pages within the
  "Integrations" section.

- Divert "create-user" page into "Administration" section.

docs/admin/create-user.md

@@ -0,0 +1,62 @@
+(create-user)=
+# Create User
+
+This part of the documentation sheds some light on the topics of
+[](inv:crate-reference#administration_user_management) and
+[](inv:crate-reference#administration-privileges).
+
+
+## Superuser Account
+
+CrateDB ships with a superuser account called "`crate`", which has the
+privileges to perform any action.
+
+However, with the default configuration, this superuser can only access
+CrateDB from the local machine CrateDB has been installed on. If you are
+trying to connect from another machine, you are prompted to enter a
+username and password.
+
+
+## `CREATE USER` command
+
+In order to create a user that can be used to authenticate from a remote
+machine, first
+[install crash](inv:crate-crash:*:label#getting-started) or other
+[](inv:crate-clients-tools:*:label#index) on the same machine you installed
+CrateDB on. Then, connect to CrateDB running on `localhost`.
+
+While you can also perform the steps outlined below within
+[](inv:crate-admin-ui:*:label#index) itself, the
+walkthrough will outline how to do it using the
+[](inv:crate-crash:*:label#index) on the command line.
+
+Invoke Crash within the terminal of your choice.
+
+```console
+sh$ crash
+```
+
+Add your first user with a secure password to the database:
+
+```sql
+cr> CREATE USER username WITH (password = 'a_secret_password');
+```
+
+Grant all privileges to the newly created user:
+
+```sql
+cr> GRANT ALL PRIVILEGES TO username;
+```
+
+![image](/_assets/img/getting-started/create-user.png){width=640px}
+
+Now try navigating to the [](inv:crate-admin-ui:*:label#index) in your
+browser. In the URL below, please replace `cratedb.example.org` with
+the host name or IP address of the machine CrateDB is running on, and
+sign in with your newly created user account.
+
+    http://cratedb.example.org:4200/
+
+After creating the user and granting all privileges, you should be able
+to continue with [the guided tour](#use), connecting to CrateDB from a
+remote machine.

docs/admin/index.rst

@@ -12,6 +12,7 @@ administration practices.
     :maxdepth: 1
 
     bootstrap-checks
+    create-user
     going-into-production
     troubleshooting/index
 

docs/domain/timeseries/generate/index.rst

@@ -4,15 +4,14 @@
 Generate time series data
 =========================
 
+To work with time series data, you are going to need a source of time series
+data. Fortunately, there are many ways to generate time series data, for
+example by sampling system metrics on your workstation or server.
+
 CrateDB is purpose-built for working with massive amounts of time series data,
 like the type of data produced by smart sensors and other `Internet of Things`_
 (IoT) devices.
 
-If you want to get a feel for using CrateDB to work with time series data, you
-are going to need a source of time series data. Fortunately, there are many
-ways to generate time series data by sampling the systems running on your local
-computer.
-
 This collection of tutorials will show you how to generate mock time series
 data about the `International Space Station`_ (ISS) and write it to CrateDB
 using the client of your choice.

docs/getting-started.md

@@ -0,0 +1,79 @@
+(use)=
+(getting-started)=
+
+# Getting Started
+
+
+{#introduction}
+## Introduction
+
+Once CrateDB is [installed and running](#install), you can start to interact
+with the database for the first time.
+
+
+{#use-admin-ui}
+### The Admin UI
+
+CrateDB ships with a browser-based administration interface called
+[Admin UI](inv:crate-admin-ui:*:label#index).
+It is enabled on each CrateDB node, you can use it to inspect and
+interact with the whole CrateDB cluster in a number of ways.
+
+If CrateDB is running on your workstation, access the Admin UI using
+`http://localhost:4200/`. Otherwise, replace `localhost` with the
+hostname CrateDB is running on.
+
+When using CrateDB Cloud, the URL will look like
+`https://testdrive.aks1.westeurope.azure.cratedb.net:4200/`.
+
+![image](https://cratedb.com/docs/crate/admin-ui/en/latest/_images/console-query.png){width=320px}
+![image](/_assets/img/getting-started/first-use/admin-ui.png){width=320px}
+
+:::{note}
+If you are running CrateDB on a remote machine, you will have to create
+a dedicated user account for accessing the Admin UI. See [](#create-user).
+:::
+
+
+{#use-crash}
+### The CrateDB Shell
+
+The CrateDB Shell, called `crash`, is an interactive command-line interface
+(CLI) program for working with CrateDB on your favorite terminal. To learn more
+about it, please refer to its documentation at [](inv:crate-crash:*:label#index).
+
+![image](https://cratedb.com/docs/crate/crash/en/latest/_images/query.png){width=320px}
+
+
+(connect)=
+{#use-dive-in}
+{#use-start-building}
+## Connect
+
+You have a variety of options to connect to CrateDB, and integrate it with
+off-the-shelve, 3rd-party, open-source, and proprietary applications, mostly
+using [CrateDB's PostgreSQL interface].
+
+To learn more, please refer to the documentation sections about supported
+client drivers, libraries, and frameworks, and corresponding tutorials.
+
+- [Drivers and Integrations]
+- [Database Driver Code Examples]
+- [Integration Tutorials]
+- [More integration tutorials]
+
+
+:::{tip}
+To learn more about all the details of CrateDB features, operations, and
+its SQL dialect, please also visit the [CrateDB Reference Manual].
+:::
+
+
+
+[CrateDB Cloud]: inv:cloud:*:label#index
+[CrateDB Reference Manual]: inv:crate-reference:*:label#index
+[CrateDB's PostgreSQL interface]: inv:crate-reference:*:label#interface-postgresql
+[Database Driver Code Examples]: inv:crate-clients-tools:*:label#connect
+[Drivers and Integrations]: inv:crate-clients-tools:*:label#index
+[Integration Tutorials]: #integrate
+[More integration tutorials]: https://community.crate.io/t/overview-of-cratedb-integration-tutorials/1015