Hey mate, welcome to SAU. The best way to learn is to get your hands dirty, and with cars it happens alot...
With your plugs, just buy a Spark Plug Socket. Should be about $5-$10 for a decent one. I'm guessing you already have a socket set? A decent 1/2in or 3/8in socket should get the job done. Have a look at what size the plug is before buying it, because if you get one that is too big or small, you are just wasting your money. Most automotive shops should sell them, but make sure you get a decent one, especially if you are going to be using it a lot. There is nothing worse than replacing broken tools all the time. Anything with a life time warranty would be decent. Therefore Repco, Sidchrome, Kinchrome, KC Tools, Snap-On and Wurth, among others are all decent tools. Actually, stay away from Snap-On and Wurth unless you are very, very rich!! Your wife would have a heart attack . Good luck, and happy fixing!