With the right tools changing a flat tire can be simple task. You will need a jack, lug wrench and a spare tire. An extra helpful item is a "cheater" bar which would give you extra leverage to help take off lug nuts that are stuck on or hard to turn. And to keep your clothes from getting dirty in the process overalls or coveralls can be put on.
For the steps to take once you have the right equipment to change the tire read the article in our Learning Center titled "How to Change a Tire."