README.md

@@ -35,6 +35,20 @@ Snort supports the following NIP's:
 ### Running
 
 This repository is a yarn workspace. To install dependencies, run `yarn` from the project root.
+
+To build the `nostr` package, use either
+
+```sh
+$ yarn build
+```
+
+or, to automatically rebuild the `nostr` package if you are working on those files
+
+```sh
+$ cd packages/nostr
+$ yarn watch 
+```
+
 To run the application, use either
 
 ```sh
@@ -47,3 +61,10 @@ or
 $ cd packages/app
 $ yarn start
 ```
+
+The `nostr` package must be built (this produces a `packages/nostr/dist` folder) in order to run the main application (`packages/app`).
+
+If you encounter the below error, it indicates that the `nostr` package has not been built:
+```
+Module not found: Error: Can't resolve '@snort/nostr'
+```