docs: added missing sections (#2901)

* docs: added a link to the quickstart guide

* docs: added env variables section

docs/content/tutorial/0-set-up-your-development-environment.mdx

@@ -141,6 +141,12 @@ If you run into any errors while installing the CLI tool, check out the [trouble
 
 ---
 
+## Install Medusa Server
+
+If you're not interested in installing the optional tools and want to get started quickly, check out the [quickstart guide](../quickstart/quick-start.mdx).
+
+---
+
 ## Optional Tools
 
 These tools are not required to have to run a Medusa server, but it's highly recommended that you have them installed.
@@ -274,6 +280,7 @@ To install Redis without Homebrew you can check out [Redis’s guide on installi
 
 ## See Also
 
+- [Install Medusa server](../quickstart/quick-start.mdx)
 - [Configure your Medusa server](../usage/configurations.md).
 - Install a storefront with [Next.js](../starters/nextjs-medusa-starter.mdx) or [Gatsby](./../starters/gatsby-medusa-starter.mdx).
 - [Install the Medusa Admin](../admin/quickstart.mdx).