Avoid most of Season 1, except for just the special road trip in Namibia (that's a two-parter). And maybe the first episode is worth watching.
And then Season 2 onwards is solid to great.
Best class to start with is whatever class you are most interested in. There are obvious benefits to starting as a tank or healer since they have the easiest/fastest queue times for group content (but you can also just use AI partners now) and holding threat as a tank is really simple now. The only real benefit to sticking to 1 character is you can get a cheaper subscription and the way FFs XP bonus works. If you're leveling a class lower than your highest class (say I'm leveling a Lv1 when I already have a Lv80) you'll get +100% XP for the content you do. You also would only be required to do
Nah man, it's not a big deal.. but like I said before.. it's also not a big deal for her to just be another number lol.
I'm not even that huge into the franchise, but brehs... 007 is James Bond.