Q. i need a use case for a homeless help mission case study

I started at the college's Welcome to COM Library guide page (link below) to access article databases, the library's online catalog and EBSCO's eBook database. Go to the databases by A to Z linked below.  The databases are in alphabetical order, so click on 'e' to search EBSCO, 'g' to search Gale and 'p' to search Proquest.

From that page, you can follow the databases (link below) link to find articles:

On the databases on most of the subject lists you will find a link to our EBSCO Academic Search Complete database.  I searched for 'homelessness' and for 'homeless missions' (without quotes) and got a verity of responses.  You may want to add words such as 'organization', or possibly specific areas of homelessness, e.g. mental health, abuse, veterans, etc.

From the Hot Topics there are also links to other databases that may offer more articles, one I found to be productive is Opposing Viewpoints,

From the Nursing page, you will find CINAHL and All EBSCO nursing databases.

Also from the college's Welcome to COM Library guide (link below), there is a link to Books (print) which will allow you to search our online catalog for books, eBooks and Audio/Visual materials. 

From the college's Welcome to COM Library guide (link below) there is also link to EBSCO eBooks.  This link allows you to search the full text of the eBooks for which we have access.

Note:  To use the library's databases or eBooks you will need your College of the Mainland ID number. To check out books you will need to bring your College of the Mainland ID card with you to the library.