Magic Forums

Hello people. I'm new to the magic world and i've been hanging around this site for some months now. I just wanna know if this is safe because i tried one simple rain spell a couple of times and it worked every time. But then i started having bad grades in school and more bad started happening in my life. Now as soon as i stopped using that spell my life returned to normal. I guess it has something to do with the balance of the universe like some people may be affected badly by the rain and in return i got bad moments as well. Can someone explain to me how these spells work and if all of them might bring evil?