1991 integra Ls problems

I just bought a 91 acura integra and it has a few problems I’m trying to solve any help would b greatly appreciated 1st the car jerks when accelerating 2nd there’s a very noticeable vibration when at a complete stop and only when at a stop 3rd and lastly my turn signals don’t work correctly when i use left turn signals the one on the right also works at the same time as the left one

Thank you