diff --git a/README.md b/README.md
index 410d002..9d7fda7 100644
--- a/README.md
+++ b/README.md
@@ -13,13 +13,46 @@ TBD
 
 Plase read how to build on below.
 
-## How to build
+## Build Packages
+
+### Setup
+
+- Install `node` and `yarn`
+- `% yarn install`
+- `% yarn build`
+
+### Make Packaging
+
+- All packages(for Chrome, Firefox, MSEdge): `% yarn run pack`
+- Chrome: `% yarn run pack:chrome`
+- Firefox: `% yarn run pack:firefox`
+  - This command will try to pack for Firefox v52 and if it fails then pack for version less than v52
+  - Your target version is less than v52: `% yarn run pack:firefox:v50`
+    - Why Firefox v52? - Firefox v52 has native support for `await-async`
+- MS Edge: `% yarn run pack:msedge`
+  - If you install your MS Edge you should sign appX
+
+### Built Package Location
+
+- Chrome(crx): `packages/scboloo.crx`
+- Chrome(zip): `packages/scboloo.chrome.zip`
+- Firefox: `packcages/scboloo-X.X.X.zip`
+- MSEdge: `packages/edgeExtension.appx`
+
+## Development
 
 - Require `node`, `yarn`
 
 1. `% git clone git@github.com:pastak/scboloo.git`
 2. `% cd scboloo`
 3. `% yarn install`
-4. `% yarn build`
-  - You can `yarn watch` to watch your code to build while developing.
-5. Install `__WORK_DIR__/dist` on `chrome://extensions`
+4. Run build command
+  - Chrome, Firefox(> v52): `% yarn run build`
+    - dir: `dist/chrome`, `dist/firefox`
+    - watch: `% yarn run watch`
+  - Firefox (< v52): `% yarn run build:firefox:v50`
+    - dir: `dist/firefox-v50`
+    - watch: `% yarn run build:firefox:v50 -- --watch`
+  - MSEdge: `% yarn run build:msedge`
+    - dir: `dist/msedge`
+    - watch: `yarn run build:msedge -- --watch`
diff --git a/package.json b/package.json
index 8388512..f3c88cc 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "pack:chrome:keygen": "if [ ! -f tmp/key.pem ] ; then ./node_modules/.bin/crx keygen ./tmp ; fi",
     "pack:firefox": "yarn test:lint:package:firefox:v52 && ./node_modules/.bin/web-ext build -s dist/firefox -a packages || yarn pack:firefox:v50",
     "pack:firefox:v50": "yarn build:firefox:v50 && yarn run test:lint:package:firefox:v50 && ./node_modules/.bin/web-ext build -s dist/firefox-v50 -a packages",
-    "pack:msedge": "yarn run pack:msedge:prepare && ./node_modules/.bin/manifoldjs -l debug -p edgeextension package tmp/Scboloo/edgeextension/manifest && yarn pack:msedge:finalize",
+    "pack:msedge": "yarn run build:msedge && yarn run pack:msedge:prepare && ./node_modules/.bin/manifoldjs -l debug -p edgeextension package tmp/Scboloo/edgeextension/manifest && yarn pack:msedge:finalize",
     "pack:msedge:gen-manifest": "rm -rf tmp/Scboloo && ./node_modules/.bin/manifoldjs -l debug -p edgeextension -f edgeextension -m dist/msedge/manifest.json && mv Scboloo tmp",
     "pack:msedge:replace-manifest": "sed -i -e 's/INSERT-YOUR-PACKAGE-PROPERTIES-PUBLISHERDISPLAYNAME-HERE/Pasta-K/' tmp/Scboloo/edgeextension/manifest/appxmanifest.xml",
     "pack:msedge:prepare": "yarn pack:msedge:gen-manifest && yarn pack:msedge:replace-manifest",