Leaving ciders to brew on their own is not "ignorance", they are fermented using the wild yeasts found in the apple itself. They are just as viable a method of fermentation as using a cultured yeast.
Blends do not always yield the best results, single variety cider are just as tasty, the key isnt the blend of random apples, but the varieties you use.
Sweet
Bittersweet
Bittersharp
true Cider apples fall under the last two varieties, dessert apples such as jonathon, fuji, pink ladys etc fall under the first. If you want to make a cider, juicing can take forever, and kit ciders are usually crap. Go to an orchard and buy 50 litres of juice and start with that.
Yeast choice is important, if you want a sweet cider, try using a sweet mead yeast, if you want something drier, you can use the UK english cider yeast and everything else including ale yeast up to champagne yeast for an extra dry result. Alternatively, just leave it with some yeast nutrient with no additional yeast, and let it ferment by itself.
You dont need:
campden tablets(if you rack)
pectic enzyme(because you just dont bloody need it)
isinglass(see above)
A carboy is just a glass fermenter. Plastic or wood will work just as well to ferment in.
If you have any more questions, drop me a PM.