This is the first and easiest thing to check and adjust. All you need is a tire gauge and a gas station that supplies air. If you don't have a tire gauge you can buy or borrow one from the gas station. Check the door jamb on the inside of your drivers side door. Your correct tire pressure should be listed there. Use the pump and tire gauge to get your tires up, or down to the right pressure.
If you have been running on winter tires over the winter, don't forget to change back to your summer tires as spring breaks. Winter tires are formulated to stay soft in cold temperatures; this is what gives you the extra traction, even at minus 25. If you leave them on over the summer they will wear quicker and lose a significant amount of tread depth by the time next winter comes around.
Driving over heavy ice and snow, not to mention the spring potholes, can bring your car out of alignment. If your wheels are out of alignment for too long you'll start to get some nasty wear on your tires.
After being frozen to the windshield and pried loose over and over all winter, your wiper blades are probably done for. You can easily replace them by sliding them off and sliding the new ones on. Local automotive stores and even gas stations carry replacements.
It's possible for the cold temperatures to damage your battery. If your car isn't starting very well it might be time to have your battery tested. Sometimes local auto auto part stores will test your battery for free.
In Alberta it's impossible to keep from tracking all kinds of snow and grime into your car. If you clean the interior now, it will help your car stay looking new for longer AND you will have all summer to enjoy a nice clean interior on your car.