You can pass your old TELUS device along to anyone you wish. If they're currently a TELUS client, they would simply log into their account, click on the "Device" tab, click on "Change phone" and follow the on-screen instructions.
If you use a compatible sim card, you can simply put it in and it will automatically connect.
If they are a new TELUS client, they can activate through the TELUS website and save 10% off their rate plan for activating their own device. Here's the link for activation: https://mobility.telus.com/en/ON/activatehandset/