how to pair?

Hi,

I am at the firs time on this list, and I am a little bit
:confused: .
I want to build a power amplifier, but I have not any transistor yet for this new model.

How much I need to buy for, let's say, 2 matched pairs?

And how can I make it myself?
What is the order of measurements?

Could you explain it to me?

Thanks,

Bela