New to git need help with unity and merge conflicts

Hi all

I am a very new git user trying to use git to collaborate on a unity project with my friend.
I have never had merge conflicts before and I have no idea how to resolve them, especially because it’s unity and half the files are formats i dont even recognise.
If anyone could maybe contact me and walk me through it I would really appreciate it
let me know if u think u might be able to help