diff --git a/README.md b/README.md
index dd7dd6d745562cc6d681c9b883f7b66f9478912b..c218923adeab3457d599284e4d3ba7b10411e761 100644
--- a/README.md
+++ b/README.md
@@ -9,29 +9,25 @@ Geomag algorithms includes tools to fetch, process, and output geomag data.
 Install
 -------
 
-We recommend using [virtual environments][]
+We recommend using [virtual environments][].
 
+__Windows__: begin with the Windows dependencies in the
+[Dependency install](readme_dependency_install.md#windows).
 
-1. Install `python` (2.7.X)
+__Mac/Linux__: begin with required dependencies in the
+[Dependency install](readme_dependency_install.md#mac).
 
-    - On OS X, we recommend using Homebrew ( http://brew.sh/ )
-
-2. Install numpy, obspy requires this be installed separately.
-
-        pip install numpy
-
-3. Install geomagio
+1. Install geomagio
 
         pip install git+https://github.com/usgs/geomag-algorithms.git
 
-4. Use geomagio
+1. Use geomagio
 
-    - Use the xyz main script, `xyz.py -h`.
-    - In python scripts, `import geomagio` or `import geomagio.iaga2002`.
+    - Use the main script, `geomag.py -h`.
+    - In python scripts, `import geomagio`.
 
 [virtual environments]: http://docs.python-guide.org/en/latest/dev/virtualenvs/
 
-
 Developing
 ----------
 
diff --git a/readme_dependency_install.md b/readme_dependency_install.md
index 33b96f758c54e0f29c5f91526ce734fbc059f5dc..ba8c1913ba558433907c8254f4484ca301244bc3 100644
--- a/readme_dependency_install.md
+++ b/readme_dependency_install.md
@@ -1,40 +1,36 @@
 Readme dependencies
 
-### Add an SSH Key to GitHub ###
-
-  1. `ssh-keygen -t rsa -b 2048` (in terminal)
-  2. Press **Enter** to accept the default save location.
-  3. Enter a passphrase that you will remember.
-  4. `cat ~/.ssh/id_rsa.pub`
-     Copy the text block that is displayed.
-     This is your SSH key.
-     If you're on Window and can't copy the text from the terminal, go
-     to `C:\Users\[your username here]\.ssh` and open the `id_rsa.pub` file
-     with notepad.
-  5. In GitHub, click **Edit Your Profile**.
-  6. Select **SSH Keys** on the left.
-  7. Click **Add SSH key**. Give it a meaningful title.
-  8. Copy your SSH Key into the Key, and click **Add key**.
-
----
 ### Windows ###
 
+#### Install ####
 1. You will need a terminal tool for Windows. We used [Git Bash][] to test these
    steps, but [Cygwin][] or another unix-like editor should work fine too.
 
   - Choosing PATH environment: We recommend the __last option__ here to include
      Unix tools, but if you don't understand what that entails then use the
      _second option_ which still adds Git to your system PATH.
-  - Besides that, keep all of the defaults.
-
-1. Install the newest release of [Node][] for Windows, using the Windows
-   Installer (.msi).
-  - Use all of the defaults.
+  - Besides that, all of the defaults should be sufficient.
 
 1. Install [Anaconda][], which includes `numpy`, `scipy` and `flake8`.
   - We recommend using "Just Me" for the install to avoid potential admin
   issues.
 
+1. Run `python` to verify that Anaconda's version of Python is being used.
+   If it isn't, update your PATH so that Conda's HOME is before any other
+   versions of Python.
+
+1. Head back over to the main [install](README.md#install) and complete the
+   instructions there.
+
+#### Develop ####
+
+These instructions only need to be completed if you plan on developing new
+code for this project.
+
+1. Install the newest release of [Node][] for Windows, using the Windows
+   Installer (.msi).
+  - Use all of the defaults.
+
 1. Close and re-open your terminal so that your new PATH is loaded.
    Make sure to navigate back to your `geomag-algorithms` project directory.
 
@@ -42,11 +38,6 @@ Readme dependencies
 
         easy_install obspy
 
-1. Run `python` to verify that Anaconda's version of Python is being used.
-   If it isn't, update your PATH so that Conda's HOME is before any other
-   versions of Python.
-
-
 [Git Bash]: http://git-scm.com/download/win
 [Cygwin]: http://cygwin.com/install.html
 [Node]: http://nodejs.org/download/
@@ -55,6 +46,14 @@ Readme dependencies
 ---
 ### Mac ###
 
+1. Install `python` (2.7.X)
+
+        On OS X, we recommend using Homebrew ( http://brew.sh/ )
+
+1. Install numpy, obspy requires this be installed separately.
+
+        pip install numpy
+
 1. Install `node`, `git` and `python` (2.7.X).
    On OS X, we recommend using [Homebrew][]
 
@@ -76,4 +75,27 @@ Readme dependencies
 1. Close and re-open your terminal so that your new PATH is loaded.
    Make sure to navigate back to your `geomag-algorithms` project directory.
 
+1. Head back over to the main [install](README.md#install) and complete the
+   instructions there.
+
 [Homebrew]: http://brew.sh/
+
+---
+### Add an SSH Key to GitHub ###
+
+This only needs to be completed if you plan on developing and pushing new code
+to this project.
+
+  1. `ssh-keygen -t rsa -b 2048` (in terminal)
+  2. Press **Enter** to accept the default save location.
+  3. Enter a passphrase that you will remember.
+  4. `cat ~/.ssh/id_rsa.pub`
+     Copy the text block that is displayed.
+     This is your SSH key.
+     If you're on Window and can't copy the text from the terminal, go
+     to `C:\Users\[your username here]\.ssh` and open the `id_rsa.pub` file
+     with notepad.
+  5. In GitHub, click **Edit Your Profile**.
+  6. Select **SSH Keys** on the left.
+  7. Click **Add SSH key**. Give it a meaningful title.
+  8. Copy your SSH Key into the Key, and click **Add key**.