First things first, head over to the Glide website and kick off a new project. This is where you'll lay the groundwork for those nifty push notifications. Make sure your project is all set up and ready to roll.

Next up, get your data organized in a Google Sheet. This sheet is going to be your go-to for managing user info and sending out push notifications. Share it with Glide and link it to your project. Easy peasy.

Time to enable user profiles in your Glide app. You'll need to set up columns in your Google Sheet to capture user data like email addresses, names, and unique user IDs.

1. Go to the "Settings" tab in Glide.
2. Click on "User Profiles".
3. Map the relevant columns (email, name, profile picture) from your Google Sheet to Glide's user profile fields.

OneSignal is a fantastic service for managing push notifications, and it integrates smoothly with Glide apps.

1. Sign up for a OneSignal account if you don't have one yet.
2. Create a new "App" on OneSignal and set it up for your Glide app.
3. Jot down the OneSignal App ID and REST API key—you'll need these for the integration.

To get those push notifications going, use the Glide API plugin or Webhooks:

1. Head to the "Settings" tab in Glide.
2. Click on "Plugins" or "Integrations".
3. Add a "Webhook" integration.
4. Enter the OneSignal REST API endpoint (https://onesignal.com/api/v1/notifications).

1. Get your Webhook URL ready to use with OneSignal’s API.
2. Create a script (using something like Google Apps Script or a server-side solution) to send POST requests from your Webhook to OneSignal.
3. Make sure the script includes:

• OneSignal App ID.
• Authorization header with your REST API key.
• Notification content payload including title, message, and target user IDs.

Example payload (via POST request):

{
  "app_id": "YOUR_ONESIGNAL_APP_ID",
  "include_player_ids": ["USER_ID"],
  "headings": {"en": "Notification Title"},
  "contents": {"en": "Notification message body"}
}

1. Send out some test notifications from your Glide app to make sure everything's working.
2. Check that the push notifications are showing up on the targeted devices.

Set up automation rules in your Glide app to send push notifications based on user actions or events:

1. Add conditions in Glide that determine when a notification should be sent.
2. For example, if a user completes a form or a specific condition in your Google Sheet is met, trigger the Webhook to send the corresponding push notification via OneSignal.

Keep an eye on notifications through OneSignal’s dashboard to make sure they're being delivered. Tweak the push notification content and frequency based on user feedback and engagement analytics.

Note: Always get user consent for receiving push notifications to stay on the right side of regulations.