Update setup instructions in README

Author: sayomaki

README.md

@@ -22,11 +22,12 @@ The Source Academy (<https://sourceacademy.org/>) is an immersive online experie
 
 1. Install the version of Node.js as specified in the `.node-version` file
 
-1. Install Python (known working versions: `2.7`, `3.8`, `3.9`, `3.10`) – **Note: Python `3.11` does not work**
-
 1. Clone this repository and navigate to it using your command line
 
-1. Install the version of `yarn` as specified in `package.json`, `packageManager`. On macos, you may need to run `corepack enable`.
+1. Install the version of `yarn` as specified in `package.json`, `packageManager`. 
+
+   > [!TIP] 
+   > We recommend using `corepack` to manage the version of `yarn`, you may simply run `corepack enable` to complete this step.
 
 1. Run `yarn install` to install dependencies.