Help/Recommendations for setting up new SSD with Linux

Hello guys,

I bought a new SSD (WD black sn770 2 TB) for my laptop and I also got a USB-C hub which includes a slot for an SSD. My old SSD is 512 GB

So here is what I want to do: I want to change to Linux from Windows 11. I want to keep my old SSD in the USB-C hub with Windows still installed in case I need it for some software/games but Linux will now be my main OS.

Are there any tips or recommendations on things I should look out for when doing this?

I also don't know if I can just install Linux in what is ATM the external SSD and then swap it out afterwards with the SSD inside the laptop without having to do anything extra and if it will just work like that.

I plan on following this tutorial: https://www.youtube.com/watch?v=bfWdnCIrcxk.

Also any recommendations on how I can safely transfer some files? Do I need a special software?

In case interested this is the distro that I plan on using: https://garudalinux.org

As a side note, I did check that the SSD is compatible with my computer and has everything right.