I really want to become a Wiccan but my mum says its 'witchcraft' and it's 'evil'. Help me please. Does anyone know where on the Internet I can get free (I don't want my mum looking at the bill and knowing) books on how and why magick works so I can at least do chants and stuff?
You don't really need books... you can look for spells and chants in the internet, or you can make your own spells. I have survived quite long without books (two years about). The mighty power of internet has pretty much all the information you need, but the magic comes from you and the life around you. Magic isn't all about spellcasting. It's about... feeling. Feeling and seeing the nature and it's changes as you walk through forests. It's about dreaming, and finding new paths in your dreams, to find out more yourself (for example, I'm trying to learn lucid dream, so I could get more out of my dreams). Magic is in the words you say, the love you share and in all the other little stuff you do throughout the day. Many people forget this, me too. But spellcasting is also part of magic, but even I haven't done much spells, even though I've been in this path for a quite (not very) long time.
But your gonna do fine, I'm sure :) I've survived so far, even though I came from the very same point where you are now.
Well,now! First of all, Wicca is not witchcraft. Wicca is a religion that has some (very few) aspects of witchcraft. Witchcraft is "what it says on the tin".It is a Craft. A Craft of magic that has been practiced for thousands of years. A great many people practice witchcraft whilst still following their religion, no matter what that religion may be.
Saying that witchcraft is evil is like saying that guns kill people. Guns do not kill anybody! People kill, by using guns! In the same way, magic may be used to carry out an evil intent. That does not make magic evil! Just the people that use it for evil intent.
Show your mother what I have written. But meanwhile do not go against your mother's ideas. She, too, has her beliefs! Perhaps, when you are older, she will allow you to have your own beliefs.
Firstly I think you should understand that Wicca has little to do with spells and/or chants. It is a religion with specific beliefs and practices. You might try reading the article about what Wicca is an is not at http://www.spellsofmagic.com/read_post.html?post=637268
But if it's magic you wish to learn and how to do spells then I'd suggest Modern Magick by Donald Michael Kraig and that you can read on-line at www.eso-garden.com/specials/modern_magick.pdf
I would also suggest, that while under your Mother's roof, you honor her wish that you not delve into Wicca or withcraft (They are not the same thing). Plenty of time for that once you are legally an adult and move out of her house.