You should really take the time to read the beginner's forums and the basics before asking a question like this. Members of this site come here to discuss magic and to ask specific questions of more knowledgeable members, no-one really has time to teach the basics when they are already written in the forums.
Be considerate, take the time to do your own research, and if you still have questions or need someone to explain what something means in more detail you can ask that, but the basics and all the "tips" you need are already written out and readily available :)
Hi and welcome to SOM, I suggest you read The Basics, What Magick Can and Cannot Do, and the different types of Magick before starting any spells. If you have any questions you can mail me and I can answer as best I can :).
What Magick Cannot Do - http://www.spellsofmagic.com/read_post.html?post=848038
The Basics Expanded - http://www.spellsofmagic.com/read_post.html?post=483942
Different Types of Magick - http://www.spellsofmagic.com/coven_ritual.html?ritual=1096&coven=245
Newbie Central is also a good place to check out - http://www.spellsofmagic.com/newbie_central.html
Casting a love spell? Read this first.