Libb

Neither Tuta or Proton will neatly integrate with Apple Mail if you want to send/receive encrypted messages. At least the last I checked it required for Proton a separate client that was not bug free (can’t remember for tuta).

If you don’t care about encryption, you may want to consider the Swiss Infomaniak.

They have a cloud offer which includes cloud storage (1to base), calendar and email, plus the online version of MSOffice, all being hosted on their Swiss servers.

What are you looking for in such a guide? Like suggested, Mint installation guide is great to… install it and I needed not much beside that myself (but I was a Mac user, not Windows) ;)

Imho, what most people need is the willingness to give Linux a chance. And that, I’m afraid, no guide could give them.