If you haven't already, check out Ableton Live. It's a real popular computer DAW that's used to make all sorts of music styles. You can use it standalone with samples and plug ins to make complete chillwave songs. I use it along side some synths to make some of my music. Plenty of youtube videos on how to use it. If you are looking to get started with just hardware, check out the newer Korg Electribe. It's a fun box that has a real good sound engine and it's portable. There are a bunch of subreddits to help you out with music production. Good luck
I suggest that you may enjoy an early 90's comp called "United Nations of Ambience 3". It may be digital, but sorta rare. There are some tracks that follow this, but especially an ambient piano track you will dig.
https://www.amazon.com/United-State-Ambience-Various-Artists/dp/B000005QAJ
Awww... well. Why not?
The track I am thinking of is Skylab's "Next". Imma post it! =)