diff --git a/00.value-of-dataviz/slides.html b/00.value-of-dataviz/slides.html
index 16c6a65..048c512 100644
--- a/00.value-of-dataviz/slides.html
+++ b/00.value-of-dataviz/slides.html
@@ -461,4 +461,4 @@ D3 underpins dozens of other charting libraries as well, and D3's own documentat
 Learning D3 both requires working in an unfamiliar environment (JavaScript) and with a very unique style of programming based around their concept of the ["data join"](https://d3js.org/d3-selection/joining), which requires a decent understanding of the HTML Document Object Model.
 
 So, if you are here to learn visualization, I think that it is fair that you can succeed in this class without putting yourself through that.</p></div><script>/*!! License: https://unpkg.com/@marp-team/marp-cli@3.4.0/lib/bespoke.js.LICENSE.txt */
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diff --git a/01.gog-altair/altair-intro.py b/01.gog-altair/altair-notebook.py
similarity index 100%
rename from 01.gog-altair/altair-intro.py
rename to 01.gog-altair/altair-notebook.py
diff --git a/01.gog-altair/outline.html b/01.gog-altair/slides.html
similarity index 99%
rename from 01.gog-altair/outline.html
rename to 01.gog-altair/slides.html
index f956610..5bc9869 100644
--- a/01.gog-altair/outline.html
+++ b/01.gog-altair/slides.html
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diff --git a/01.gog-altair/outline.md b/01.gog-altair/slides.md
similarity index 100%
rename from 01.gog-altair/outline.md
rename to 01.gog-altair/slides.md
diff --git a/Justfile b/Justfile
new file mode 100644
index 0000000..8ac35d8
--- /dev/null
+++ b/Justfile
@@ -0,0 +1,4 @@
+slides:
+    for file in `ls */slides.md`; do \
+      marp $file; \
+    done
diff --git a/README.md b/README.md
index 80e3a87..979b67a 100644
--- a/README.md
+++ b/README.md
@@ -6,11 +6,27 @@ I will push notes to this repository throughout the quarter, so if you are keepi
 
 Either make companion files in each directory, or keep your notes in a separate directory/notebook altogether.
 
+## Table of Contents
+
+I will create a directory for each topic, numbered in the order they're introduced.
+
+Inside each directory, you're likely to find:
+
+- `slides.md` - My slides in raw markdown.
+- `slides.html` - My slides converted to a presentation. (using [`marp`](https://marpit.marp.app)) You can open this in your web browser (Type `open slides.html` from the command line.)
+- `*-notebook.py` - These are marimo notebooks (see below).
+
+Not every week will have slides & a notebook, but one or the other should generally exist.
+
+Other files, such as images & data will be kept in the appropriate folder.
+
 ### Marimo Notebooks
 
 Marimo notebooks are similar to Jupyter notebooks, but work much better with Git and have some other nice features I appreciate.
 
 If you have ever looked at a Jupyter notebook file (.ipynb) in an editor, you know they are large JSON files, and once they are checked into Git changes become very difficult to track.
 
+To interact with a notebook, run:
+
+`uv run marimo edit <notebook-file>`
 
-`uv run marimo`