Exactly how to configure your laptop or other handheld device for eduroam will depend on
- which device(s) you are using and
- which equipment your school / university / college is using.
If you know that your school / university / college does provide eduroam, please ask the IT staff for support with setting it up on your laptop or other devices. Imprtant: the configuration instructions are specific for your institution. It is not helpful to follow configuration instructions of other institutions; the settings are different from institution to institution and you will very likely misconfigure your device if trying third-party configurations.
If you are not sure whether or not your institution provides eduroam, the National Roaming Operator for your country may be able to help with your enquiry. To find out more, follow the linked maps from http://www.eduroam.org/
For a list of devices that are compatible with eduroam see here: https://confluence.terena.org/display/H2eduroam/Devices+that+are+compatible+with+eduroam