They are all the same

 

Can y'all explain to me step by step directions to change them? Please and thank you! If anyone has picture demonstrations that would be amazing too!

 

Right, dude you need to search.
Do it like this ... use the google
Type this in the google search field

site:rx8club.com DIY Coil Replacement

My search returned this links .... here are the top 4
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-burnt-out-coil-replacement-131476/
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-how-replace-ignition-coils-168162/
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-coil-packs-installation-tips-120475/
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-another-plugs-wires-coils-209818/

Take your pick (hint: Mazsurfer knows his ****)

 

you can find a DIY on the forums for just about everything. My suggestion (and im sure most people will agree) is to look into a Black Halo Racing ignition kit. Our coils etc wear out around 30k miles (sometimes less). BHR ignitions are a huge upgrade and dont have to be replaced every 30k. They also come with directions how to install it. Its a simple install.... just take off the airbox and the coils are right below it. BHR will be a little more $$ than OEM coils but the advantages of it heavily outweigh the cost difference. You also get a discount (last time i checked) if you buy the ignition kit w/ spark plugs. Plugs are a simple install also. Just take off the front driver side wheel and the liner and you have instant access to the rotors / plugs. just make sure you put the leading and trailing plugs in correctly.

 

Got the car fixed. Completely cut off the cat and replaced it with a straight pipe. Bored a hole for the Oxygen sensor and not has about 10x more power!

Now got one more question.

When I start the car and let out on the clutch to let it idle to warm up it jumps RPM's. from 1500 to 2000 then back up and down till it gets warmed up. What is this?