Street Sense Media has a service provider guide for the district on their website https://www.streetsensemedia.org/locations/#.YzyS8qjMISI

They also list a selection of providers in their street paper, if the person in question doesn't have internet access and/or doesn't want to go to a library to use the internet.

Street Sense also does case management and outreach, so they might be a helpful starting point for this person.