Apply to a junior college. In order to transfer to a four-year university, you must have a major in mind. Pick the junior college that will best suit you and your major. Some junior colleges offer different classes than others. Consult the respective junior colleges to see what classes they offer.
Study hard and get good grades. Make sure you consult your desired four-year university and see which classes are needed in order to transfer. If you want to transfer to a prestigious university, you must have a good grade point average. Four-year universities don't look at extracurricular activities too much, so focus on getting a good grade point average instead.
Apply to a four-year university. Consult the four-year university to find out when they accept applications. Most universities generally want you to apply at least one school year in advance.
See if your junior college offers any transfer agreement programs to four-year universities. Some junior colleges allow you to sign a contract saying that as long as you get above a certain grade point average and take a certain number of classes, you are guaranteed a spot in a certain four-year university. Each four-year university has its own rules and stipulations; find out what they are from your community college transfer counselors.