diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 80d25c6e..38a07e9d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -12,9 +12,22 @@ Most contribution (we imagine) would be in the form of API-compatible modules, w
 * [Info File](#info-file)
 * [Ideas](#ideas)
 
+
+## Contribution ideas
+
+See [this issue](https://github.com/publiclab/image-sequencer/issues/118) for a range of ideas for new contributions, and links to possibly helpful libraries. Also see the [new features issues list](https://github.com/publiclab/image-sequencer/labels/new-feature).
+
+### Bugs
+
+If you find a bug please list it here, and help us develop Image Sequencer by [opening an issue](https://github.com/publiclab/image-sequencer/issues/new)!
+
+****
+
 ## Contributing modules
 
-Any module must look like this :
+Most contributions can happen in modules, rather than to core library code. Modules and their [corresponding info files](#info-file) are included into the library in this file: https://github.com/publiclab/image-sequencer/blob/master/src/Modules.js#L5-L7
+
+Any module must follow this basic format:
 
 ```js
 module.exports = function ModuleName(options,UI) {
@@ -78,7 +91,7 @@ to set `this.output` to an object similar to what the input object was, call
 
 ### UI Methods
 
-The module is responsible to emit various events for the UI to capture. There are
+The module is responsible for emitting various events for the UI to capture. There are
 four events in all:
 
 * `UI.onSetup(options.step)` must be emitted when the module is added. So it must be emitted outside the draw method's definition as shown above.
@@ -110,6 +123,8 @@ All module folders must have an `info.json` file which looks like the following:
 ```json
 {
   "name": "Name of Module to be displayed",
+  "description": "Optional longer text explanation of the module's function",
+  "url": "Optional link to module's source code or documentation",
   "inputs": {
     "var1": {
       "type": "text",
@@ -144,122 +159,6 @@ Also, A module may have output values. These must be defined as shown above.
 
 See existing module `green-channel` for an example: https://github.com/publiclab/image-sequencer/tree/master/src/modules/GreenChannel/Module.js
 
+The `green-channel` module is included into the core modules here: https://github.com/publiclab/image-sequencer/blob/master/src/Modules.js#L5-L7
+
 For help integrating, please open an issue.
-
-## Ideas
-
-Notes on development next steps:
-
-### UI
-
-* [ ] spinners before panels are complete
-* [ ] click to expand for all images
-
-### Modules
-
-* [ ] remotely includable modules, not compiled in -- see plugin structures in other libs
-* [ ] `sequencer.addModule('path/to/module.js')` style module addition -- also to avoid browserifying all of Plotly :-P
-
-### Core Functionality
-
-* [ ] allow passing data as data-uri or Image object, or stream, or ndarray or ImageData array, if both of neighboring pair has ability?
-* [ ] (for node-and-line style UIs) non-linear sequences with Y-splitters
-
-### Testing
-
-* [ ] comparisons with diff
-* [ ] testing a module's promised functionality: each module could offer before/after images as part of their API; by running the module on the before image, you should get exactly the after image, comparing with an image diff
-
-### Use cases
-
-* [ ] make an Infragram module that accepts a math expression
-
-### Bugs
-
-If you find a bug please list it here, and help us develop Image Sequencer by opening an issue!
-
-## Module Candidates, related Ideas
-
-* https://github.com/linuxenko/rextract.js
-* https://www.npmjs.com/package/histogram
-* https://github.com/hughsk/flood-fill
-* https://github.com/yahoo/pngjs-image has lots of useful general-purpose image getters like `image.getLuminosityAtIndex(idx)`
-* some way to add in a new image (respecting alpha) -- `add-image` (with blend mode, default `normal`?)
-* https://github.com/yuta1984/CannyJS - edge detection
-* http://codepen.io/taylorcoffelt/pen/EsCcr - more edge detection
-* https://github.com/jywarren/webgl-distort/ - an image distortion module
-* https://github.com/jadnco/whirl - scrubbable image sequence player
-* non graphics card GL functions could be shimmed with https://github.com/Overv/JSGL
-* or this: https://github.com/stackgl/headless-gl
-* https://github.com/mattdesl/fontpath-simple-renderer
-
-### Referencing earlier states
-
-Complex sequences with masking could require accessing previous states (or nonlinearity):
-
-* flood-fill an area
-* select only the flooded area
-  * roundabout: lighten everything to <50%, then flood-fill with black? Not 100% reliable.
-  * roundabout 2: `flood fill`, then `blink-diff` with original
-* then add step which recovers original image, repeat `flood-fill`/`blink-diff` for second region
-* reference above masked states in a `mask` module, with `maskModule.draw(image, { getMask: function() { return maskImg } })`
-
-**Notes:**
-
-`pattern-fill` module to use patterns in JS canvas:
-
-```js
-var c=document.getElementById("myCanvas");
-var ctx=c.getContext("2d");
-var img=document.getElementById("lamp");
-var pat=ctx.createPattern(img,"repeat");
-ctx.rect(0,0,150,100);
-ctx.fillStyle=pat;
-ctx.fill();
-```
-
-Masking:
-
-```js
-ctx.save();
-ctx.beginPath();
-ctx.moveTo(0, 0);
-ctx.lineTo(160, 600);
-ctx.rect(0, 0, 160, 600);
-ctx.closePath();
-ctx.clip();
-ctx.drawImage(img, 0, 0);
-ctx.restore();
-```
-
-****
-
-## UI notes:
-
-* visual nodes-and-lines UI: https://github.com/flowhub/the-graph
-  * https://flowhub.github.io/the-graph/examples/demo-simple.html
-
-```js
-
-settings: {
-  'threshold': {
-    type: 'slider',
-    label: 'Threshold',
-    default: 50,
-    min: 0,
-    max: 100
-  },
-  'colors': {
-    type: 'select',
-    label: 'Colors',
-    options: [
-      { name: '0', value: '0', default: true },
-      { name: '1', value: '1' },
-      { name: '2', value: '2' }
-    ]
-  }
-}
-
-```
-
-Possible web-based commandline interface: https://hyper.is/?
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