It's done finally.

I went to Canadian tire for the spark plug boot remover and none of them knew what the hell that was. They pointed me to the package with a wrench and the deep socket for the plugs. I told myself, forget it and came home. Took the engine cover off and took 2 ignition coil boxes off. The boots connected to the coil boxes came right off. The other 2, I had to pull with a little force and then they popped right out. No sweat. After that, I took the old plugs and then put the new ones. I did final tight with a torque wrench 15-20lb-ft (correct unit?) as stated in the manual.
While the intake pipe was taken off, I cleaned the Throttle Body with TB cleaner. Disconnected the battery (I had CEL on) to reset the code, and reconnected. Started the engine, CEL went off.
Old plugs looked pretty worn out. (first time change over 7yrs, 71,000km) But after driving about 200km today, CEL came back on. I may need to change MAF sensor.

YJ