The Service Set Identification (SSID) can be up to 32 characters in length and normally consists of readable characters. Most home networks have an SSID that you can remember and were picked by the person who set up the network. If you did not change the network name, it may be listed as the default name of the router - this might include the name of the router manufacturer, such as Linksys, Netgear, etc.
IMPORTANT: Some home networks do not broadcast the SSID for added security. If your wireless access point has the SSID broadcasting feature turned off, the device you are trying to connect will not see the SSID when scanning for available networks. If this is the case, you can turn on the SSID broadcast feature for your wireless access point.
If you still cannot find the SSID, you may need to contact the person who set up your network or your ISP and wireless router manufacturer.