Bad time to start liking techno as the gentrification of this genre is stronger than ever, with the identical dogshit music being played and released on daily basis with flag bearers of the genre being the least talented people possible.
Best way to familiarize yourself would be to pick and follow few artists, listen to their dj sets and then use Discogs or Youtube to listen to the individual songs and start digging for yourself.
The artists that are relevant to your request, who in my opinion will have a timeless status 50 years down the line:
Labels that are definitely worth checking out on your own:
Don't listen to early techno as it will give you the wrong opinion of what the genre is today. There are three artists in techno that new ears need to hear to know everything there is to know about the late 80s - 2017 period:
Note that this post doesn't represent techno as a whole and more focuses on your request for melody and shit.