Hi mate, good to hear it's working! Sadly, i don't think the itouch has GPS (maybe it doesn't have A-GPS due to being Wifi only, not sure) but you can still get navigation software but don't expect it to work fully
(never tried it so i could be wrong!)
Open up Cydia (if anything about choosing 3 options comes up, just choose hacker or user, don't worry about it), and press the Manage tab bottom right (2nd to last, just before the Search tab) and then click on Sources icon (middle option). Now press the edit button on the top right corner of the screen and press the "add" button on the top left and type in
and press add. Press ok or add at the next screen and wait till it loads up the repo. After that, you'll be back in the sources menu again, press the edit button again and add this one too
Now when that's finished adding (black screen with scrolling text), press the search tab bottom right, last option and search for
.
Click it from the search list and click the top right button which says install, and install it. Now you will have an app on your itouch which you can search for GPS apps or whatever and download them for free, without even leaving your itouch
Let me know if you encounter any problems!