I've never read any graphic novels before, but I have to say, Heartstopper is definitely a great way in getting a proper introduction to the genre! I've finished the first volume in only less than an hour, and immediately after did I want to just jump straight into reading the next volume.
Oseman did an incredible job in writing characters and situations that were relatable and authentic, and it's definitely a series that I would highly recommend people to get into if they're interested in any stories revolving around LGBTQ+ representation. Such divine romance that I hope garners as much attention as possible! Brilliant work!