If you want to donate money or time to an organization in New York, here are three I recommend:

in addition to the shelter where I met Camila, which also runs a soup kitchen.

These are a few of the national organizations you can support, with funding or activism in policy campaigns:

If you wish to offer financial support to the family in the book, you can do so directly:

If you are looking for shelter in your area, for yourself or someone else, this site can help:

If you are seeking resources for unhoused students, this guide offers many opportunities.