diff --git a/README.md b/README.md
index 72ec27d..f0a5ad8 100644
--- a/README.md
+++ b/README.md
@@ -116,22 +116,62 @@ avdmanager create avd \
     -k "system-images;android-35-ext14;google_apis_playstore;x86_64"
 ```
 
+# Emulator
+
 ## Run the emulator
 
 Launch the development container
+
 ```bash
 ./launch.sh eikona
 ```
 
-Launch the emulator
+Once the emulator is launched (see below), select the device (shift-a) then switch to debug build (s) and finally open the app (a).
+
+## Launch the emulator
 
 ```bash
 ./shell.sh eikona
 ./emulator.sh Pixel
 ```
 
-Install the app
+## Install the app
 
 ```bash
+./shell.sh eikona
 ./install.sh debug # or release -- default debug
-```
\ No newline at end of file
+```
+
+# Add a new component 
+
+## Shell in and add component
+
+```bash
+./shell.sh eikona
+npx expo install react-pdf-viewer
+```
+
+### To remove
+
+```bash
+./shell.sh eikona
+npm remove react-pdf-viewer
+```
+
+## Build the app
+
+While in the shell previously launched, run the 'build' script:
+
+```bash
+./shell.sh eikona
+./build.sh debug # release
+```
+
+# Update the application launcher icon
+
+Go to https://easyappicon.com/, drag the adaptive-icon.png to the app, reduce 
+padding to -100%, then save.
+
+Copy the ic-launcher/android/* files to android/app/src/main/res/
+
+Rebuild the application.