https://hamprojects.wordpress.com/2020/09/06/raspberry-pi-for-ham-radio/
I'm not sure if this topic has been covered elsewhere.
The above link provides a set of tutorials on virtually every aspect of RPi use by hams today with emphasis on setup and use of a variety of common apps such as WSJT-X, FLDigi, etc. Including discussion of SSH, Putty, etc.
It is truly an A to Z tutorial. I highly recommend downloading all the sections, seven in all; ~15MB.
If you have never powered a RPi, or plugged in a mouse, this will get you going. If you are a power user (not me, I'm just learning!), you will find some new and challenging applications.
Bruce,
KN4GDX