Make sure to fill up the twitter_credentials.py file with your API keys.
Make sure that you have all requirements installed (cf readme.pdf)
You can run get_ULDS.py to insert a set of users in a database, and, once this is done, get_tweets.py to recover the timeline of the later set of users.
To run get_ULDS.py, you must redefine the location_terms characteristic of the city or town you target.
Similarly, language, UTC offset and geocode name ought to be tailored to your target location.
Finally, you'll need to manually search for a small sample of seed users you know are in the location for sure, and update the following:
There exists various ways to get a user_id from a screen_name, one of which is going to https://tweeterid.com/: