diff --git a/fig/ssh_connection.png b/fig/ssh_connection.png
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diff --git a/fig/ssh_connection.svg b/fig/ssh_connection.svg
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diff --git a/setup.md b/setup.md
index b8c5032..124e151 100644
--- a/setup.md
+++ b/setup.md
@@ -1,7 +1,27 @@
 ---
 title: Setup
 ---
-FIXME
 
+This tutorial requires a "shell" or "terminal" program. Below are instructions for installing this program on different operating systems. For more information on how to use the terminal program, see [here](https://swcarpentry.github.io/shell-novice/).
+
+### Windows Installation and Access
+
+If you are using Windows 10 version 1809 or a more recent version of the Windows OS, then you have access to a Windows SSH program called OpenSSH. More information about OpenSSH can be found [here](https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse?tabs=gui).
+
+If you are using an older version of Windows, you will need to install [the Windows Subsystem for Linux (WSL)](https://learn.microsoft.com/en-us/windows/wsl/install). WSL has the ssh programs you need by default, so once you've installed WSL you are ready for this tutorial.
+
+### Mac Installation and Access
+
+For macOS, this application is called Terminal. To open Terminal, you can either
+
+* Open 'Finder', select the 'Go' menu, then select 'Utilties'. In the 'Utilities' folder you should be able to find and open 'Terminal'.
+
+* Use the Mac 'Spotlight' computer search function. Search for 'Terminal' and press `RETURN`.
+
+More information about how to use the Terminal application in macOS can be found [here](https://swcarpentry.github.io/shell-novice/).
+
+### Linux Installation and Access
+
+For Linux, you can access the terminal from the application menu or the search bar. For most Debian and Ubuntu based systems, `CTRL + ALT + T` will also open the terminal application.
 
 {% include links.md %}