If you are living on campus, visit the Residential Network Connections page https://iprequest.stanford.edu/ to register your devices for the Stanford network.
If you are living off campus, IT Services has made Self-Registration available on "Stanford" wireless networks around campus. If you connect an unregistered computer in an area that has this service, you should automatically be given the opportunity to register. If you need help you can submit a request at helpsu.stanford.edu or call 650-725-HELP.
If you are a visitor and need temporary wireless guest access, visit the Wireless Access for Stanford Visitors page. https://uit.stanford.edu/service/wirelessnet