Hardware synth route: Korg Minilogue XD is a great box that you'll likely keep forever. For a less traditional but fun experience, Arturia Microfreak or for more $, the Minifreak (which comes with a Minifreak VST!). To save money, see what's available second-hand locally and Google each to see if it's beginner friendly.
Software route: Get a midi controller with plenty of knobs and buttons that is supported for easy use by whatever DAW you want (digital audio workstation). By easy use, I mean that there is a config available within the DAW that will map the controller's buttons/knobs etc.to functions within the DAW. Examples: Push 3 or Launchkey keyboards for Abelton, Komplete Kontrol, etc.
If you want a lighter synth that is paired with a sequencer, drum machine, and effects all-in-one hardware box, for fun on the go or on your couch, you want a groovebox. I like the Novation Circuit Tracks, which has a serious synth under the hood, accessible by PC or a midi controller (Novation Launch Control XL is plug-n-play friendly if you download an addon from their website).
Software route: Get a midi controller with plenty of knobs and buttons that is supported for easy use by whatever DAW you want (digital audio workstation). By easy use, I mean that there is a config available within the DAW that will map the controller's buttons/knobs etc.to functions within the DAW. Examples: Push 3 or Launchkey keyboards for Abelton, Komplete Kontrol, etc.
If you want a lighter synth that is paired with a sequencer, drum machine, and effects all-in-one hardware box, for fun on the go or on your couch, you want a groovebox. I like the Novation Circuit Tracks, which has a serious synth under the hood, accessible by PC or a midi controller (Novation Launch Control XL is plug-n-play friendly if you download an addon from their website).