There are a few questions to ask yourself before performing a spell or ritual.
1. What is my goal?
What changes am I hoping to see as a result of this magickal working?
How will my life be different? (Be specific. Picture the day-to-day impact of what you hope to achieve.)
2. Do I truly want what I am asking for?
Do I understand what I am asking for?
Will this goal solve the problem I think it will solve?
3. Is magick the best way to achieve this goal?
Are there other steps I could try first to achieve these changes?
What other actions will I need to take alongside this spell?
4. Will this magickal working be ethical?
Will it cause harm to someone else?
Will it violate anyone's free will?
You can do witchcraft alone - Solitary Witchcraft, or a part of a 'Coven' A Coven is a gathering of witches.
We do spells and rituals. We don't boil children in a couldn't or sacrifice animals.
Most of the rituals i've done are done at home or in the woods.
Here is a step by step guide on how to do a Wiccan ritual
http://www.ehow.com/how_2247497_perform-wiccan-ritual.html
Not all rituals are like that, some people don't cast a circle. I am heathen, most heathens don't cast circles but I feel it is important. Rituals differ as of personal preference.