I find true bugs fascinating, especially regarding their patterns. Eminently photographable.
Within their group, the shield bugs (Pentatomoidea) are my favourite.
It is worth noting that, unlike butterfiles, moths and beetles and some other groups of insect, they end-up as adults having passed through a progression of immature stages (nymphs), gradually get more like the adult. The nymphs moult to get from one stage to the next; there is no pupal stage. As you get to know and recognize more species of heteroptera, be prepared to find ones that look familiar but 'not quite right'; they are probably near-adult nymphs.
This year the capers on the bank at the back of my property were looking very healthy. ...Until beset by young nymphs of some sort of bug; I think one of the shield bugs. Within a couple of days, the leaves had been sucked dry, many falling off. I was hoping to see a progression in the nymphs, hopefully eventually seeing what the adult looked like. But they have all gone!