What i did was download a demo of a DAW, a few different ones to see which one suited me best. And just played around on them for ages just trying out different things to see what they did, eventually got a decent understanding of everything and started trying to make beats. I didn't learn any music theory for a while and made a few tracks (albeit bad ones haa) with hardly any knowledge of the theory, but once i started learning the basics my music got alot better. So if i were you i would get a demo, start getting to grips with the programs while also learning a bit of theory and if its something you think you want to do buy the DAW you prefer and just keep practicing.