Spells are nothing more than a very powerful prayer. Candles, incenses, herbs, personal effects are all added to the ritual in order to enhance the energy you add to your intentions. The most important thing to remember when performing a spell is to decide, before casting it, if this is a karmically sound decision.
As per the Wiccan Rede, you must abide the rule of three, and always remember "And Ye Harm None, Do What Ye Will".
Here we have provided some simple, do it yourself spells, (those most frequently requested), and resource material for you to help increase your knowledge.