The Kogan Agora Netbook User Manual gOS Edition is on the web. I came across it while looking on the web for how to connect an external monitor. The manual is a 44 page 1.7 Mbyte PDF file. It is a good manual, but a shame it is not provided on the netbook (at least I couldn't find it on the Netbook). The manual told me what I needed to know: to have an external monitor recognised, I had to first log out and log in again to Linux. With this done my 24" Dell 2405FPW displayed what looked like an enormous desktop, after having looked at the 10 inch screen.
My next problem is to work out how to get the WiFi to work, which the manual has a good section about.