First, Windows didn't recognize the programmator. I had to download the driver via trial+error on broken links on the internet.
I got it, it said USB-SERIAL CH340 (COM10) in Device Manager.
Second, I don't know which computer program do I need to use to run this thing. How can I tell it to get some data off of the microcontroller and to put some on it? Surely I need a programmator software.
I found AVRDude in GUI form, selected my device, entered COM10, but it says this
trying to connect to device...
avrdude: ser_open(): can't open device "COM10": Sustav ne mo×e pronaŠi navedeno
Because my Windows is in Croatian, plus, Croatian uses non-ASCII letters so there's garbage, let me say what it really said:
"Sustav ne može pronaći navedeno polje."
"System cannot find the specified field."
And then, an extra instance of AVRDude GUI launches!
Which means third, I don't have a working programming program!
Is there a programming software for this thing!?