It is indeed a "real" terminal. What ISO did you install? If it is the
NetInstall, it is perfectly normal that nothing graphical was installed. To
check whether something graphical works you can fire:
$ startx
As for the Network connectivity, your Wifi chipset may not be supported by a
free driver/firmware. The recommended solution (beside using an Ethernet
connection) is to acquire a free software-friendly device as a replacement.
This is a tricky process (it basically is impossible to surely know what
chipset you are buying from the model only). The only reliable solution I am
aware of is to get the device from ThinkPenguin. Moreover, by using the
previous link (with "libre" in the URL), 25% of the benefits made on your
purchase are donated to the Trisquel project.