So I have a Nissan Maxima 2006 SE (automatic) and it constantly jerks when shifting gears and when going from drive to reverse and vice versa. I don't really know much about cars but i know that is bad. and I know it can be expensive. I've been watching youtube videos on people who love cars and mod theirs and other stuff to them. I want to be proud of my car and work on it and make it my own.
My questions to y'all is: Is it possible for the average joe to repair or replace large parts like the transmission? What kind of tools are recommended? Is it hard? Please leave any and all tips!