For a new watcher, especially a young one, Strange New Worlds is probably the best start. It has a lot of the classic “Trek” philosophy going on, but paired with modern production and special effects, and also paired with more modern treatment of female characters.

I love The Next Generation, that’s “my Trek”, but certain things haven’t aged well.

I’ve been watching Babylon 5 for the first time (didn’t see it when it was actively airing), and while it’s not Trek, it was produced in the same era as TNG, Voyager, etc. and I find myself jarred by certain ways they portray characters, esp. female ones, and that same sort of stuff is present in older Trek too. Like, Crusher and Troi got absolutely cheated when it came to great arcs and such. Strange New Worlds handles its female characters much, much, MUCH better.