[marshal99]

Which sentai series did you watch to get hooked ?

Mighty morphin all the way to power rangers in space , it's the zordon era with one continuous continuity.

Power Rangers in Space was supposed to be the end of the franchise , hence they brought back all the main villains from the series for one big finale but ratings went up for In Space and saved the PR franchise so they decided to continue. I would recommend in Space.

1) Unlike in previous season , the scale was far larger , no more just angel grove , it's the entire universe.
2) It had a wacky one of a kind teamup with the teenage mutant ninja turtles
3) The team-up with Adam (MMPR) and Justin (Turbo blue)
3) The bad guys are interesting and diverse.
4) The Psycho rangers - the first actual evil power rangers team.

Every season after that is based off the super sentai season in their own seperate continuity , mostly.