Also, there are many ways to find out, and your astrological sign is a only a simple factor as to what your element is. To find your element, it is suggested that you feel the energies of each and what you feel most at home with is the element that you are going to the most comfortable to work with. This however, does not mean that you'll only ever work with one element. You can work with all elements if you wish.
As for the spells here, some of them can be fraud, while others are legitimate (even some that are fraud that can be made legitimate). We Editors are working to sort out the fraudulent from the legitimate. And seeing as how you seem to be new to Magick, the lower levels of kinesis would seem appropriate (trust me, you're farther in kinesis than many new people here who aspire to learn kinesis).
I would like to say that you are not a demon spawn. There are many people who have angry though (even those who want nothing to do with angry thoughts). It doesn't mean you're evil. It means you have a situation you don't like. If you want, and I am not saying that you need to, you can look into different types of therapy. I am not talking of therapy with a councilor, but natural therapy where you can get your frustrations out and deal with your emotions. Things like art, swimming, meditating, going for a walk in a safe neighborhood, smelling Nature, or anything that is safe and relaxes you (appeal to you senses as much as you can).