This is a question that should be asked by all teachers and mentors who first meet a new student, but there is no one set answer to this question. However, a teacher should be looking for certain answers when asking it. I'm not saying that a teacher or mentor should deny teaching a person if they give an answer that may not be very encouraging to a positive outlook as to what they think Wicca is and can be in their lives. But maybe a person should be directed to reconsider what they expect to learn.
Wicca isn't to be just another way to defy your parents or authority figures in your life. It isn't a cool way to dress. It isn't an interesting way to intimidate those around you. It isn't a way to fit in with your new friends. It's not a way to look for a new love interest. And it certainly isn't a way to justify lewd or promiscuous behavior. It's not a path to get revenge on your enemies. It also isn't an excuse to be used to justify using substances that alters one's state of conscientiousness. And it isn't about the world of Harry Potter or any other Hollywood dream world. So, what is Wicca about? What should a person expect when they begin their studies and advance in those studies throughout the years to come?
Wicca is a personal spiritual path. That means that much of the practice of Wicca is determined by the practitioner. But there are a few things that are distinct to Wicca and separates it from other Pagan paths. First and foremost, is that Wiccans worship at least one Goddess and one God. Some worship a whole pantheon of Deities or various Deities from various pantheons. You can't call yourself Wiccan if you don't include this aspect into your practice. Even Dianic Wiccans recognize that there is a God as well as the Goddess, though they don't always worship both in their rituals. Second, most Wiccans recognize and follow the Wiccan Rede and the Three Fold Law. How they interpret these can vary though. Third, most believe in the Summerland and reincarnation. That one reincarnates human to human but can go from one sex to another. Fourth, and this is also believed by most Pagan practitioners, you and you alone are responsible for your actions. You can't blame that you were influenced by some evil entity to do what you did. You did it and you must own up to it.
So what should a person expect when they decide to follow the Wiccan path? They won't suddenly have joy and a perfect life. They can expect to be subjected to ridicule and attacks from those that feel that they have stepped onto the path of the devil and things wicked and evil. On the other hand, they can gain a personal relationship with the Deities that they have chosen to worship. This is because the Deities live within us and all around us, so They aren't any further from us than our thoughts and nature. A person who chooses to follow the Wiccan path can expect to have to study hard for the knowledge that is available to them, but they can also expect to have found an inner happiness because they have discovered that they have found their spiritual home.
Yes, you can do spells as a Wiccan, but there are a few rules that most Wiccans follows. The Wiccan Rede and The Three Fold Law and the belief that everyone has the right to free will pretty much sums up those rules. There are others but these are the important ones. What do they mean? Well, the Wiccan Rede does say that we can do what we want, but it also says that we are to cause "No Harm" while doing it. The Three Fold Law states that whatever action you put out, especially magical, will come back to you in like form only three times stronger. In other words, for good actions good will return and for harmful actions that which is harmful will return to you. That leaves the fact that all humans have free will. This means, in conjunction with the Wiccan Rede and the Three Fold Law, that you don't have the right to interfere with a person's free will to live as they wish. And yes, that means that casting that love spell on someone is interfering with their free will to love who they feel they should love.
Another aspect of Wicca is that many of us practice divination. Tarot and the Runes seems to be the most popular, but certainly not the only forms of divination that is practiced. Most believe that divination can be used to learn not only someone's future, but also to know what is going on around them but outside of their physical sight. It can also reveal to you things about your past. Most Wiccans finds divination to be a very useful tool in their practice.
As stated before, Wiccans believe that the divine is within nature and thus Wiccans believe that all of nature should be respected and protected. So, you might find yourself involved in environmental issues. Also, most Wiccans believe in a form of Karma. That what we do can and will come back to us in our next life.
Wiccans also believe in respecting our ancestors. That doesn't mean just those that have passed on, but also those that are alive and with us today. Wiccans recognize that our ancestors have much wisdom to pass on to us. Many Wiccans set up altars to honor their ancestors. Wiccans also celebrate not only the Esbats, which is the various moon cycles like the Full Moon and Dark of the Moon, but Sabbats as well. There are eight Sabbats in a year and they are a reflection of the various season that they fall in.
So, if you wish to become a Wiccan then expect to do a bit of work in your studies and your spiritual growth. Being a Wiccan isn't an ongoing party or fright fest. It's a serious and enjoyable celebration of life, the Deities and our spiritual self. If all you are after is creating fear or forcing your will on others, then you should think about choosing a different path.
For more information on beginner Wicca, I'd like to suggest a few sources. Scott Cunningham's books "Wicca : A Guide for Solitary Practitioners" and "Living Wicca" can be found in most book stores and libraries. Of course, you can check out my Facebook page, "My Wicca Way", for all of my articles about beginner Wicca.