The Craftsman AssureLink is already MyQ enabled. You will need to purchase an internet gateway. There are branded ones like this one but II’m 99% sure you can use you can use any of the Chamberlain or Liftmaster gateways. This is the one I have and it says it supports Craftsman Link.
Connect the AssureLink gateway to your home network router.
Create an account at: https://assurelink.craftsman.com. There is a standard website and a mobile version, so you can do this from your PC or from your smart phone.
Register your AssureLink internet gateway using the serial number on the bottom of the device.
Add an AssureLink device to the account. You can control up to 16 AssureLink devices from garage door openers to light and lamp plug modules.
Download an app to your iPhone from iTunes or your Android device from Android Market.