It's not a big job.
Buy one Driveway Pot Hole Filler to fill the crack first. Then, use Driveway crack Filler cover the filled cracks.
You can buy above items at Home Depot, Canadian Tire, NORA, and War-Mart. There are 'Black Knight' and other names for your choice.
Need to follow weather conditions. To make a deeper and wider of the crack before filling is better.