Adding clothes to a base mesh

Hey and thank you for any help in advance. I have a base mesh/face, but he’s just naked and i want to give him clothes. I made the entire base mesh in sculpt mode and I’m loving sculpting (I’m pretty new to blender).

I see how the clothes were added in this tutorial, but if somebody could help me understand better the process of how to get the clothes to move with the base mesh, i would really appreciate it. My final goal is to animate a character and i’m not sure how to get the clothes to move with the base mesh.