1. Open the reminders or calendar app on your phone or tablet. 2. Tap “Add” or “Create New” to start a new reminder. 3. Type in a clear title for your reminder, like “Doctor’s appointment” or “Call Sam.” 4. Set the time and date when you want the reminder to alert you. 5. Add repeat options if it’s a regular task, like daily medication or weekly bin day. 6. Add notes or details if needed (like the address of the appointment). 7. Save the reminder and check that it appears in your list. 8. Done — you’ll get a handy notification when it’s time!