diff --git a/README.md b/README.md
index f374424..d9b7cd4 100644
--- a/README.md
+++ b/README.md
@@ -20,25 +20,54 @@ All SuperCollider code is included in a [quark](http://doc.sccode.org/Guides/Usi
 * `SCReduxStore`: Class that implements the state store replica in SuperCollider.
 * `SCReduxTempoClockController`: A wrapper for TempoClock which will take a tempo from the Redux store.
 
-## JavaScript Module
-### Actions
+## JavaScript Interface
+### `reducer`
+A reducer is provided to store the ready states of the SCReduxStore, sclang, and scsynth:
 
-### Reducer
+```javascript
+import SCRedux from 'supercollider-redux';
+
+const rootReducer = combineReducers({
+  [SCRedux.DEFAULT_MOUNT_POINT]: SCRedux.reducer,
+  ...
+});
+```
+
+### `SCReduxController`
+A controller class that starts sclang and initializes the SCReduxStore.
+
+```javascript
+import SCRedux from 'supercollider-redux';
+
+const scReduxController = new SCRedux.SCReduxController(store);
+
+scReduxController.boot().then(() => {
+    ...
+}).catch((err) => {
+    ...
+});
+```
+
+Parameters may be passed:
+
+* `scStateSelector`: An optional selector (intended use with [reselect](https://github.com/reduxjs/reselect)) to control which portion of the state tree is passed to `SCReduxStore` in SuperCollider.  This will be an important performance consideration in any application.
+* `interpretOnLangBoot`: A string containing SuperCollider code for sclang to interpret immediately on boot.  This is important to, for example, indicate which audio device to use.
+
+```javascript
+const controller = new SCReduxController(store, {
+    interpretOnLangBoot: `
+s.options.inDevice = "JackRouter";
+s.options.outDevice = "JackRouter";
+    `,
+    scStateSelector: mySCStateSelector
+});
+```
 
 ### Constants
+#### `READY_STATES`
+An enum with the possible values for the ready states of `scStoreReadyState`, `scLangReadyState`, `scSynthReadyState`.
+
 
-### Classes
-* `SCLangController`
-    * Starts sclang
-    * Dispatches actions to store sclang and scsynth boot state
-    * Optionally takes a string for sclang to interpret when it is booted, helpful for initial setup or configuring audio devices before the server starts.
-* `SCStoreController`
-    * Sends initial state to SuperCollider StateStore
-    * Forwards subsequent state changes to it
-    * Creates an `OSCActionListener` to listen for actions
-* `OSCActionListener`
-    * Listens for actions on OSC port and dispatches to store
-
-## Use Cases
+## Example Projects
 * [Transdimensional Audio Workstation](https://colin-sullivan.net/main/2016/transdimensional-audio-workstation/)
 * [Touch UI to Generative Music Sequencer in SuperCollider](https://colin-sullivan.net/main/2019/performance-environment/)
diff --git a/src/lib/OSCActionListener.js b/src/lib/OSCActionListener.js
index 9f91e39..8839505 100644
--- a/src/lib/OSCActionListener.js
+++ b/src/lib/OSCActionListener.js
@@ -25,6 +25,13 @@ function parse_payload_pairs(payloadPairs) {
  *  to the state store.
  **/
 class OSCActionListener {
+  /**
+   *  @param  {Store}  params.store - The state store
+   *  @param  {String}  params.clientId - A unique string to indicate the dispatch
+   *  origin.
+   *  @param  {Number}  params.localPort - A number of which port to listen on
+   *  for incoming actions.
+   **/
   constructor(params) {
     this.params = params;
     this.store = params.store;
diff --git a/src/lib/SCLangController.js b/src/lib/SCLangController.js
index 6268a96..f9d6bee 100644
--- a/src/lib/SCLangController.js
+++ b/src/lib/SCLangController.js
@@ -15,9 +15,9 @@ import { scLangInit, scLangReady, scLangQuit } from "./actions";
 /**
  *  @class        SCLangController
  *
- *  @classdesc    Start sclang using @supercollider/lang, dispatching sclang
- *  ready state to store and running initial sclang commands needed for
- *  supercollider-redux to work through the API quark.
+ *  @classdesc    Start sclang using @supercollider/lang, dispatch actions
+ *  during init sequence, set up a dispatch to run within sclang once scsynth
+ *  has started.
  **/
 class SCLangController {
   /**
diff --git a/src/lib/SCReduxController.js b/src/lib/SCReduxController.js
index a41ef88..473713d 100644
--- a/src/lib/SCReduxController.js
+++ b/src/lib/SCReduxController.js
@@ -1,11 +1,26 @@
 import SCStoreController from './SCStoreController';
 import SCLangController from './SCLangController';
 
+/**
+ *  @class        SCReduxController
+ *
+ *  @classdesc    A top-level interface for launching SuperCollider and setting
+ *  up the SCReduxStore.
+ *
+ *  @param  {Object}  props - See SCLangController and SCStoreController for
+ *  the possible options.
+ **/
 class SCReduxController {
   constructor(store, props) {
     this.sclangController = new SCLangController(store, props);
     this.scStoreController = new SCStoreController(store, props);
   }
+  /**
+   *  Start SuperCollider, initialize the replica state store, and set up a
+   *  channels for sending state and receiving actions.
+   *
+   *  @return {Promise} - Resolves when sclang has booted and store is ready.
+   **/
   boot () {
     return new Promise((res, rej) => {
       this.sclangController.boot().then(() => {
@@ -13,9 +28,17 @@ class SCReduxController {
       }).catch(rej);
     });
   }
+  /**
+   *  A helper method to get the `@supercolliderjs/lang` `SCLang` instance.
+   **/
   getSCLang () {
     return this.sclangController.getSCLang();
   }
+  /**
+   *  Stop all interfaces and shutdown SuperCollider.
+   *
+   *  @return {Promise} - Resolves when everything has shutdown.
+   **/
   quit () {
     return new Promise((res, rej) => {
       this.scStoreController.quit();