This once, I'm gonna keep this short.
When I started out in developing games with Unity, there weren't much resources around, neither were there any good, well curated collections.
So in this thread, I'm gonna keep dropping all the free resources I have found and will find in the future. Do keep checking it out.
I am not going to be endorsing any of the list's entries. All the credit for collecting and organizing these resources will go to me.
If you want to contribute something, PM me and I'll put it up with credits.
Cheers, and jam on with the development!