I don’t know where to start for a particular character

But my fav iron man comic is invincible iron man

In whichever order you like. You choose a narrative arc and start with that.

For Avengers I personally started with Avengers Disassembled.

^ me too!

Avengers I started with Kurt Busiek’s run. If it isn’t your cup of tea, at least read Ultron unlimited from that run because it’s a banger.

Thank you