Yeah I think Eccleston is the best place to start personally, that's the beginning of the revival and they kind of 'reset' a lot of stuff and gradually reintroduce the key ideas of the show from there.

It's a bit cheese in places and some parts haven't aged well at all (some of it looked shit even in 2005 lol) but also that's just part of the show. It's a bonkers mess that sometimes doesn't work at all and sometimes is the best thing ever.