AVR Programmer query

I think you should read up on the boards you’ve named at the links below. Once you’ve read all of that, I’m certain all of your questions will be answered.

https://learn.sparkfun.com/tutorials/pr … okup-guide

https://learn.sparkfun.com/tutorials/us … o-mini-33v

https://learn.adafruit.com/introducing- … t?view=all