I've happily used Linux Mint for many years. I recommend it for anyone who has some tech knowledge and is willing to learn. Buy a laptop with Linux Mint pre-installed. (I usually install Linux Mint on cheap refurbished laptops but that's not for beginners.) You could use it as a second computer and play with it until you are ready to make it your number one computer. Avoid dual booting because it adds complexity. Encrypting a whole disk adds complexity. You may wish to consider using a tool to protect only your key files on the hard drive. Anyway, you still don't want to risk loss or theft of your laptop. Even if your info is protected, replacing the laptop would be highly inconvenient and expensive.
Reality check: getting scanners to work with Linux was problematic and may still take extra effort though it is doable. That's why I also have at home an older Windows 10 desktop with scanner attached that I use occasionally for some purposes where Windows is easier. I use it less and less. It will be my last Windows computer. I will never upgrade to Windows 11 for reasons of both privacy and security.
My biggest step in minimizing reliance on Windows was selecting a personal financial software application for Linux to replace Quicken on Windows. I finally switched to Gnucash which is acceptable for personal finance. Gnucash is a bit clunky for managing anything more than basic investments or basic small business. For OCT readers, Gnucash handles multiple currencies well, much better than Quicken.
Reality check: getting scanners to work with Linux was problematic and may still take extra effort though it is doable. That's why I also have at home an older Windows 10 desktop with scanner attached that I use occasionally for some purposes where Windows is easier. I use it less and less. It will be my last Windows computer. I will never upgrade to Windows 11 for reasons of both privacy and security.
My biggest step in minimizing reliance on Windows was selecting a personal financial software application for Linux to replace Quicken on Windows. I finally switched to Gnucash which is acceptable for personal finance. Gnucash is a bit clunky for managing anything more than basic investments or basic small business. For OCT readers, Gnucash handles multiple currencies well, much better than Quicken.