I decided to try to set up my old desktop as a home server for a learning experience. I followed the tutorial here.
I couldn't get my laptop to connect through the Squid proxy, and eventually gave up.
Now I have the problem that my laptop won't connect to my home network through wireless. I have a feeling that it has something to do with having edited the /etc/resolv.conf file, but I purged and then reinstalled resolvconf. The problem is still there.
The symptoms are strange because after connecting to the wireless network and trying to load a page, part of the page will load, and then the connection will completely stop working. No other pages will load after that. The wired connection directly to the router works fine.