diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..13c5c83
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,191 @@
+
+                                 Apache License
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+
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+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2020 Ben Firshman
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/README.md b/README.md
index 04a8239..ddf8287 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,5 @@
-it'sa me, meowio
\ No newline at end of file
+it'sa me, meowio
+
+meowio is based on jsnes; all source code in this repository is licensed under the apache license 2.0.
+
+the audio samples in `public/samples/` are not mine to license; they are copyright their respective owners, and are included here under the "it's fucking delightful" clause of section 29.21 of the canadian copyright act.
\ No newline at end of file
diff --git a/public/permastruct.jpg b/public/permastruct.jpg
new file mode 100644
index 0000000..604bffd
Binary files /dev/null and b/public/permastruct.jpg differ
diff --git a/src/App.svelte b/src/App.svelte
index 93615bf..c69b0ae 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -49,10 +49,42 @@
   <input bind:files={romfile} type="file" /><br/>
   <button style={`background-color: ${paused ? "#aaffaa" : "#ffaaaa"};`} onclick={() => paused = !paused}>{paused ? "Keep going" : "Please stop"}</button>
   <hr/>
-  <p>DPad: Arrow keys<br/>B button: Z, A button: X, Select: Tab / C, Start: Return / V</p>
-  <hr/>
   <SampleTweak bind:opts />
   <hr/>
+  <details>
+    <summary>Help! What is going on?</summary>
+    <img src="permastruct.jpg" alt="Instructions for Meowio">
+    <p>
+      MEOWIO is a NES emulator that replaces the sound chip with the <a href="https://www.youtube.com/watch?v=TvYOm89IcUU">Jingle Cats</a>. Or ducks. 
+      Or Windows 95. Whatever you want, really.
+    </p>
+    <p>
+      Choose a game by clicking one of the buttons at the top of the page, or click "Browse" next to those buttons to select a NES ROM from your local 
+      machine.
+    </p>
+    <p>
+      Select a sample by clicking one of the buttons below the games. "Meow" is chosen by default, but I have collected a delightful assortment of other noises
+      with which to assault your senses. The "Browse" button works here too, if you want to try other sounds. Basically <a href="https://en.wikipedia.org/wiki/HTML_audio#Supported_audio_coding_formats">any 
+      common sound format should work</a> - .wav, .mp3, .ogg, .flac.
+    </p>
+    <p>
+      The sample can be tuned by moving the "Frequency" slider - this represents the frequency of the note in the sample when played at regular speed. Perhaps
+      counterintuitively, this means if you lower the frequency, the in-game sound gets higher-pitched, and if you raise it, the pitch goes lower.
+    </p>
+    <p>
+      The "Gain" slider controls the sample's volume; most samples are fine at 1, but if you have a particularly quiet sound you might want to increase this.
+    </p>
+    <p>
+      The "Please stop" button pauses your game, which can be quite helpful when it can all becomes a little much. "Keep going" will resume the audio onslaught.
+    </p>
+    <p>
+      This runs entirely in your browser, and no files are ever uploaded to my server. This means I can't know what terrible audio crimes you commit with
+      MEOWIO unless you tell me. Please tell me if you find a particularly delightful and/or horrifying combination!
+    </p>
+    <h3>Keys</h3>
+  </details>
+  <p>DPad: Arrow keys<br/>B button: Z, A button: X, Select: Tab / C, Start: Return / V</p>
+  <hr/>
   <div>
     made by <a href="https://gamemaking.social/@SpindleyQ/">jeremy penner</a> | based on <a href="https://jsnes.org">jsnes</a> | <a href="https://git.information-superhighway.net/SpindleyQ/meowio/">source code</a>
   </div>
diff --git a/src/app.css b/src/app.css
index d1acc11..5222cb2 100644
--- a/src/app.css
+++ b/src/app.css
@@ -55,7 +55,17 @@ button:focus,
 button:focus-visible {
   outline: 4px auto -webkit-focus-ring-color;
 }
-
+summary {
+  cursor: pointer;
+  border: 1px solid transparent;
+  border-radius: 8px;
+  padding: 0.6em 1.2em;
+  font-size: 1.2em;
+  color: #646cff;
+}
+summary:hover {
+  border-color: #646cff;
+}
 @media (prefers-color-scheme: light) {
   :root {
     color: #213547;