I used Yahoo and searched for "quilt made from men's shirts". Got a lot of results.
https://images.search.yahoo.com/sear...hirts&fr=yfp-t
Edited to add: In looking at the pictures, you can make almost any pattern. I would suggest you think about a controlled scrappy because you won't have that much fabric from each shirt.
Then I searched "how to cut up a man's shirts for fabric" These Youtube videos seem to be a good way to learn about preparing the shirts & more.
Part 1 -
https://www.youtube.com/watch?v=-RoRYvLbQnE
Part 2 -
https://www.youtube.com/watch?v=a5_HC5sGEKU
Part 3 -
https://www.youtube.com/watch?v=gQiOzQMRYYQ
Part 4 -
https://www.youtube.com/watch?v=LWvBGZs_3r0