the fuel filter is located on the inside passenger frame rail right where the cowl comes down to the frame. you need two wrenches, one to hold the filter and one to loosen the line, do this on each end.
not unless you are really, really skinny. you might be able to, but it would be a major pita. get your front end up on stands or place your wheels on some sort of lift, 2x8's stacked on top of each other and screwed together works for me when i get lazy. then you can crawl under and loosen the nuts and replace.
Like most maintenance items, it depends on your skill level and your tools. It's a fairly easy job. If you really want to avoid spilling fuel, you can take the extra step of disconnecting the rubber fuel lines at the tank. That requires removing the fuel filler door and then disconnecting the lines--maybe an extra 10-15 minutes vs. having fuel run down your arms.
I read the above Tech Tips, one makes it sound very easy, another makes it sound nearly impossible. Which is it????
I think it depends how comfortable you are underneath the car.
If you can barely squeeze undeneath it will be tougher than having lots of room.
Might take you 15-20 minutes to change it(probably not the first time)