I used the same link as Womble - found it much easier than a book.
But with experience and advice from those with more experience I've tried various methods and have worked out what's best for me & depends on what the chicken I'm plucking is to be used for.
I've tried dry & wet plucking.
Wet is just so fast it's amazing ( it's important to get the tempreture right). But dry makes a better finish ( so better for roasting birds), can do it in about 20 minutes now - it's the pin feathers that take the time I find - though these could be burnt off.
Nearly everyone one says it's easier when warm - but I find that the skin tears more easily then.
So when dry plucking I remove all the big strong wing & tail feathers first, while they are still warm.
I then prefer to let them cool before I pluck the rest. Left hanging by their feet of course.
As the cockerals I dress are surplus from my breeding programmes the skinny ones, I skin and remove the breast & leg meat & use the rest for stock.
The actual gutting takes hardly any time at all once you get the hang of it - again that link of wombles I think is the best for that.
Good Luck, before you know it you'll be a pro!