Kamigaku

I use this topic to avoir creating mine because i have a "similar issue". I'm trying to record the keys i played because that's what i've read about MIDI keyboard. I have the same keyboard (CTK-2400) and i have only the usb midi connected to my usb in my pc. I have tried Audacity but i can't record anything. Can you guys lead me to a software / guide that could help me to be able to use my keyboard on my pc ? Thanks !