Network connection systems and methods for managing a variety of services over different kinds of networks. A network connection and communication system is provided that monitors and displays units of network usage over a selected network. The information can be displayed in terms of usage units that are easy to understand from the viewpoint of a user. For instance, a display screen can indicate the number of available or used usage units, eg, connection minutes (time), the number of books purchased and downloaded over the network, the number of connections to a communicating partner. Multiple conversions can occur between various services that are available depending on the type of service and selected network.