[GNC] New Accounts

[promethean at keemail.me]

I have a very basic question. I am new to GnuCash since Quickbooks will not run on Linux and I want to have my own ledger as opposed to a cloud solution.
I have three different banks that I have checking accounts with. One I use just for personal/household use.
The other two I have set up specifically to fund Crypto transactions.
How do I need (and how do I go about) set up these accounts? Do I need three different and separate GnuCash programs? Can I set up the three accounts within one program? Is there an alternative solution?
What is the best way to go?
Thank you for sharing your time and information.

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