Before you can connect to the Internet, you should choose what type of service you'd prefer. These pages help you choose among the dial-up and higher-speed Internet options available to you.
Generally speaking, dial-up access is less expensive but significantly slower. High-speed access is fast but expensive, and not all high-speed options are available in all areas. The page linked above presents a graph displaying the various options available, their speeds and availability, and other issues.
This page helps you decide which type of ISP best suits your particular needs.
This page presents a graph of ISPs that fit into the categories outlined on the "Choosing a high-speed ISP" page above. It describes names, approximate price ranges, and other general service details.