Will a New SSD Be a Separate Drive or Merge with My Existing Storage?

When you add a new SSD, it will show up as a separate drive in your system with its own drive letter. So, don’t worry about merging storage—each SSD will function independently. Usually, your current SSD will be assigned the (C:) drive letter, and the new one will get its own letter after you set it up.

I’m a bit confused about the Storage Space thing. How do I set that up? Can someone help with the steps?

In most cases, yes, the new SSD will be a separate drive, which is the easiest way to manage it. However, if you want to combine the storage from both SSDs, you can set them up as a "Storage Space" in Windows if you're using that OS.