I've never been very car savvy or mechanically inclined but lately I decided that I wanted to start doing things myself and actually learn how sh*t worked. My spark plugs needed changing and everyone says how easy it is to do yourself, so I decided to give it a whirl. In only 14 easy* steps, you too can have brand new spark plugs in your Achieva!
Here's how to change spark plugs on a '97 Olds. Achieva
1. Go to NAPA auto parts store and ask
2. Get NAPA sales person to walk out to car in lot and point to the spark plugs
3. Nod like you understand everything but only buy some of the parts needed
4. Wait until there is snow in the forecast to change the spark plugs
5. Remove front cover-thing with wrench to expose the old spark plugs

6. Try to pull out old plugs with hands. Try again with the wrench-thing. Return to auto parts store for longer wrench extension

7. Pull out the old spark plugs with new wrench extension. Get really excited when they finally come out

8. Return to Auto parts store for Anti-Seize grease and new plastic casing-things

9. Smear grease on the metal part of new spark plug. Smear some other kind of grease on the plastic part.
10. Insert slimy new spark plugs in slots where old ones were.

11. And tighten them with your new extension wrench-thing - be careful not to tighten too much!

12. Replace old, cracked black plastic tube/casing-things with new ones.

13. Squish the top part with black tube things on top of new spark plugs. Realize this is impossible, remove black tube things and stick onto spark plugs. Realize this too is impossible and give up...
Just kidding! Finagle some wires to make for easier maneuvering of the top part, once that is in place then line up the black plastic tube things with the spark plugs, squish it all together replacing the top cover thing, tighten the bolts down - keeping in mind that they will heat up when the car is in use, so not too tight.
14. Take a deep breath, insert keys into ignition and turn...