Just be aware that as far as Nu Who goes (god, I hate the word 'nu'), some of the actors runs have better reputations than others. I don't necessarily agree with them, but I wouldn't start with Peter Capaldi or Jodie Whittaker. They're both great actors, and play great doctors, but they're the weaker of the new runs.

I'd be tempted to either start at the beginning of modern Doctor Who with Christopher Eccleston, and watch them all in order, or jump to the newest doctor, Ncuti Gatwa, and see how you like it.

Either way, have fun 😁