how to replace spark plugs only

Remove spark plug wire from the spark plug by twisting and pulling at same time ... then using proper tools remove the old spark plug, reverse proceedure to install...Noting the following; 'lightly' lubricating new spark plug threads will aid installation... Complete one cylinder before moving to the next! .. ▪️Simplified version... Take old plugs out.. Put new plugs in.. One at a time!!▪️ .. BETTER YET >> To avoid engine damage, have qualified personnel replace the spark plugs!!!!.. You dig????