You use an installer to get ready. Find it here:
If you do not find your institution at the eduroam CAT, or your device is not listed, you must seek support at your institution.
Note that you are obligated to use the provided installer or an installation guide from your home institution. Some devices are able to connect without using the proper installer or guide. But if you do so, you risk exposing your username and password to intruders.
Using Android requires special configuration. See this link: