So trying to watch JoJo Bizzare adventures and good lord this shit is hard to get through. Is there even any point in forcing my self to watch it all? As far as I know the other series outside of being in the same universe aren't really related, are they?
Parts 1-6 are all related:
Part 1 is about Jonathan and Dio
Part 2 is Jonathan's grandson, Joseph, fighting vampires (part one leads into this)
Part 3 is Joseph's grandson, Jotaro, and Joseph fighting Dio and introduces stands
Part 4 is about Joseph's bastard son fighting stands created by the weapon Dio had and a serial killer in a small town
Part 5 is about Dio's bastard son (who is also kind of a Joestar for spoiler reasons) in Italy
Part 6 is about Jotaro's daughter, Joleyne, fighting remnants of Dio's followers in jail
If you're on the original and not feeling it, keep going- it's the shortest and ends at like episode 9 IIRC. Part two with young Joseph is where it gets awesome.
Part 7 is where it's unrelated- it kind of starts over with an alternate take on everything with new versions of Zepelli and Johnny Joestar in late 1800s USA taking part in a big cross-country race. Still has stands. Then Part 8 is a completely different take on part 4, IIRC.