Update the Getting Started tutorial

docs/tutorial/getting-started.md

@@ -4,15 +4,15 @@ In this tutorial, you will set up a local version of our WordPress network.
 
 ## Prerequisites
 
-Please ensure you have the following tools set up on your computer. Everything
-can be installed via [Homebrew](https://brew.sh/).
+Please ensure you have the following tools set up on your computer. Most things can be installed via [Homebrew](https://brew.sh/),
+except where noted.
 
 ### PHP
 
-We currently use the latest release on the 8.0.x branch, using commands such as:
+We currently use the latest release on the 8.1.x branch, using commands such as:
 
 ```bash
-$ brew install php@8.0
+$ brew install php@8.1
 ```
 
 ### Composer
@@ -23,6 +23,28 @@ https://getcomposer.org/
 $ brew install composer
 ```
 
+You will also need to configure Composer to connect to a few [private repositories](https://getcomposer.org/doc/articles/authentication-for-private-packages.md). You will need the following:
+
+1. A Github classic token with repo scope
+
+Creating the token itself is done in [your Github account settings](https://github.com/settings/tokens/new?scopes=repo&description=For+Composer), and then registered with Composer via a command like:
+
+```bash
+composer config --global github-oauth.github.com TOKEN_VALUE_HERE
+```
+
+2. Our credentials for the Advanced Custom Fields Pro plugin
+
+These credentials can be found in our shared LastPass account, in the `Shared-Product-Pantheon` folder. They are added
+to your Composer configuration via a command like:
+
+```bash
+composer config --global http-basic.connect.advancedcustomfields.com USERNAME PASSWORD
+```
+
+When you are done with these steps, you should be able to see the results in `~/.composer/auth.json`.
+
+
 ### Terminus CLI
 
 https://docs.pantheon.io/terminus
@@ -58,21 +80,35 @@ You have done everything correctly when:
 
 https://lando.dev/
 
-```bash
-$ brew install --cask lando
-```
+Lando should _not_ be installed via homebrew. The [install instructions](https://lando.dev/download/) should be followed instead.
 
 ## Set up application
 
-- git clone mitlib-wp-network
-- composer install
-- lando pull
-- lando wp search-replace command
-- lando start
-- (optional) lando logs -f
+1. git clone mitlib-wp-network
+2. composer install
+
+If you run into problems during this phase, you may need to complete the authentication steps listed in the Composer
+section above.
+
+3. lando start
+
+While the site cannot be used yet, the containers should be running for the steps which follow.
+
+4. lando pull
+
+The `pull` command can take database and files from any tier on Pantheon, but in most cases you will want to select the
+Live tier.
+
+5. lando wp search-replace command
+
+```bash
+lando wp search-replace libraries.mit.edu mitlib-wp-network.lndo.site --url=libraries.mit.edu --network
+```
 
-Get .env from someone
+6. Load https://mitlib-wp-network.lndo.site/ in your browser. Voila!
 
-Set secrets.json values inside Lando (need more words here)
+## Please note
 
-Load https://mitlib-wp-network.lndo.site/ and see the homepage
+These instructions do not cover how to define application secrets, which mostly involve allowing WordPress to send
+emails via the WP SMTP plugin, and is rarely needed for local development. That topic is covered in the project README
+if it becomes relevant for your work.