How to use external wifi dongle

[danabnormal9000]

This is the output of lsusb :

Bus 001 Device 051: ID 04d9:1503 Holtek Semiconductor, Inc. Shortboard Lefty
Bus 001 Device 015: ID 2109:2813  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I also attached the output of dmesg as dmesg.txt

Btw several buttons on my USB keyboard is not working correctly on my Freeplay CM3.
When I type @, it becomes "
When I type \, it becomes #
etc

How can I fix the keyboard problem?