I would suggest starting with R Plus Seven, his best album imho. It might be a baffling first listen if you’ve never heard a whole album by him before but stick with it! If you’re into it, try Replica and Returnal, which are similar - experimental, unpredictable, lots of interesting sounds including digital textures.
Then you might want to explore his early stuff, like Betrayed in the Octagon or Drawn and Quartered. These are less challenging, very dreamy ambient synth workouts with lots of arps. The best thing to do is get Rifts, which collects all this stuff. Actually I think it’s on youtube.
His more recent stuff is not for beginners, imo! Personally I found the harsh sounds and blast beats (!) of Garden of Delete very off-putting, but of course you might dig it. His latest album includes vocals for the first time.