You don't need a physical keyboard to use MIDI technology. Many audio production programs have a virtual keyboard that will let you play basic stuff with your computer keyboard. However, I sequenced my entire metal album's drum track by just clicking and dragging all the notes in the editor. (Not gonna post it because I don't want to dox myself.) You can get Ardour (which can sequence MIDI amongst other things) for free through your Linux distribution, and I believe it can be found for Windows. Else, Reaper is technically not free, but you can use the demo for as long as you want.

All of this is to say that you don't need any training or equipment to start playing electronic music, particularly that using MIDI technology. A couple hours here and there will be enough to start producing competent music.