Updates Security Get Started landing page (elastic#2275)

Makes a few slight changes to the GS landing page. Relates to
elastic#2017.

Preview
[here](https://docs-v3-preview.elastic.dev/elastic/docs-content/pull/2275/solutions/security/get-started).

Author: jmikell821

solutions/security/get-started.md

@@ -11,15 +11,17 @@ products:
 
 # Get started [getting-started]
 
-New to {{elastic-sec}}? Discover more about our security features and how to get started. This section describes how to set up {{elastic-sec}}, install {{agent}} and the {{elastic-defend}} integration on your hosts, and use the {{elastic-sec}} UI in {{kib}}.
+New to {{elastic-sec}}? Follow the instructions in this topic to get started. Then, review the rest of the Get Started section to learn how to use the UI, review requirements, and discover more about our security features.
 
 :::::{{stepper}}
-::::{{step}} Choose your deployment type 
+::::{{step}} Install the Elastic Stack  
 
-Elastic provides several self-managed or Elastic-managed options for you to install {{elastic-sec}}. For simplicity and speed, we recommend one of our {{ecloud}} options. Check out our [deployment types](/deploy-manage/deploy.md#choosing-your-deployment-type) to learn more. 
+To use {{elastic-sec}}, at minimum, you'll need to install {{es}} and {{kib}}—the core components of the {{stack}}. Elastic provides several self-managed or Elastic-managed installation options. For simplicity and speed, we recommend one of our [{{ecloud}}](/deploy-manage/deploy/elastic-cloud.md) options—either {{ech}} or {{serverless-full}}. However, if you prefer to install Elastic on your own infrastructure, you can deploy a [self-managed cluster](/deploy-manage/deploy/self-managed.md). Check out our [deployment types](/deploy-manage/deploy.md#choosing-your-deployment-type) to learn more. 
 ::::
 
 ::::{{step}} Ingest your data 
+
+
 After you've deployed {{elastic-sec}}, the next step is to get data into the product before you can search, analyze, or use any visualization tools. The easiest way to get data into Security is through one of our integrations—a pre-packaged collection of assets that allows you to easily collect, store, and visualize any data from any source. You can add an integration directly from the **Get Started** page within the **Ingest your data** section. Choose from one of our recommended integrations, or select one of the other tabs to browse by category. Elastic also provides different [ingestion methods](integration-docs://reference/index.md#ingestion-methods) to meet your infrastructure needs. 
 
 :::{{tip}}
@@ -29,7 +31,7 @@ If you have data from a source that doesn't yet have an integration, you can use
 
 ::::{{step}} Get started with your use case 
 Not sure where to start exploring {{elastic-sec}} 
-or which features may be relevant for you? Continue to the next topic to view our quickstart guides, which are tailored to specific use cases and help you complete a core task so you can get up and running. 
+or which features may be relevant to you? Continue to the next topic to view our quickstart guides, each of which is tailored to a specific use case and helps you complete a core task so you can get up and running. 
 ::::
 
 :::::