I’d recommend trying to watch TOS before TNG if you can. It’s aged a lot, so no shame if you cant. Just skip ahead to TNG if TOS isn’t your cup of tea. If you can manage it though, its only 3 seasons and some movies and you’ll appreciate some good episodes of TNG and DS9 a lot more if you enjoyed TOS first.
I’d recommend trying to watch TOS before TNG if you can. It’s aged a lot, so no shame if you cant. Just skip ahead to TNG if TOS isn’t your cup of tea. If you can manage it though, its only 3 seasons and some movies and you’ll appreciate some good episodes of TNG and DS9 a lot more if you enjoyed TOS first.