Rigging itself is its own beast but can sometimes be a bit easy depending on that it is for. A humanoid character or even a four legged dog character rig could be a bit easy but for things with 6 legs two mouths and extra fabric could get kind of difficult.
So what could be some quick tips on how to set up a functional rig for a complex character model or just some ways to get better at being more efficient in rigging complex characters?