And for a while they don't care either!

I feel like these are all very divisive series.

I think you'd be safer sampling something recent and popularly well-regarded like Shinkenger, or Gokaiger. If you're looking for something older, I'd go with Jetman.

I don't think it's necessary to have seen any sentai to watch Gokaiger. In fact, the cameos are a good way to determine what other series you may want to watch.

Personally I struggled with Gokaiger because pretty much all sentai shows, I relate them all exclusively to the Power Rangers versions I grew up with, so it was all a bit weird and disorientating.

As for where to start, Goseiger I'd say. Both because it's very good, solidly made, and has a healthy blend between dark and light moments. Plus, as far as sentai goes, it has some of the best written and handled characters.

DaiRanger
KakuRanger (46 eps subbed of 53)
Jetman'
TimeRanger (16 of 50)
ZyuRanger
Gokaiger
GekiRanger
CarRanger (25 of 48)
MegaRanger (44 of 51)
Liveman

Timeranger is fully subbed, I told you this Kain :lol Just because you don't like VHS rips doesn't mean it isn't subbed.

Pretty much my thoughts on Gokaiger as well. I think it was pretty interesting seeing glimpses of what the Sentai counterparts from all the Power Rangers series were like.

Well yeah, it is fully subbed up on youtube. Of course, if you try to watch it on a tv the subs are nearly unreadable. Sorry dude, but I pulled that up and they were blurry as hell on a 42 inch tv.

Fair enough, I watch my stuff on my laptop or phone.

Megaranger also is subbed by Millionfold Curiosity. They've been updating very regularly and only have one episode left. By the time you reach it, they'll have finished the series.

My first Sentai was Gokaiger and I fell in love with it. I had already seen every Power Rangers season but was reluctant to get into Sentai, but I was convinced to watch it with my partner and twin brother and its my favorite season of Power Rangers and Super Sentai combined. It doesn't need any prior Sentai knowledge because, as people have already said, the main characters know nothing about Sentai either and it really helps introduce the history of Sentai as well as how awesome some of the previous teams are. Outside of being an anniversary season, it has a great main cast who mesh really well together and are all very memorable and a good set of villains who have a great ensemble of both extremely threatening and very humorous as well as including an interesting arch-rival character. From, Gokaiger, I really wanted to watch the other Sentai series and have been going through them ever since. Its also the only Sentai/Power Rangers season outside of Jetman that my twin brother wants to watch as well, which I think supports the fact that it doesn't rely on being homage after homage.

Basically, I'm a huge Gokaiger fanboy, so I say start there!

I'm still gonna vouch for Gekiranger because I love it so much to call it my favorite Sentai without hesitation~