Questions about an install

So I've never actually used a machine with UEFI before I've always been on older machines with BIOS.

I got a Dell Optiplex 3070 Intel core 9500T (gen 9) 2.1 GHz 16GB ram 256gb SSD but it has windows 11 on it.

I hate Windows, and I don't want any trace of it left on my machine. I'd prefer Debian but would even take Ubuntu over Windows What is the best guide for this for someone who has never messed with UEFI before?