To display the text that's whizzed past:
dmesg | more
To display the text that's probably relevant (this displays lines containing "wlan"):
dmesg | grep wlan
For a start show us what you get for the first three commands as per the web page you mentioned (slightly modified to only show relevant parts):
lsusb | grep Edimax
lsmod | grep 8192cu
iwconfig
Copy and paste by left clicking and dragging to highlight the relevant text in the terminal window, then centre click to paste.