A great way to get fit is to cut out regular soda from your diet. Drinking regular soda is pretty much the equivalent of drinking sugar. It definitely will not facilitate any kind of fitness goal. Instead, switch to diet soda or better yet, switch to water.
Making up your own workout routine is a great way to stay in shape without having to join a gym. The equipment that you use in a gym simply replicates activities that you might do on your own. Don't have a step climber? Find some stairs that people don't usually use.