Magic Forums

I'm new to wicca and I'm very intrigued by it but also confused. Hopefully someone can shed some light. I've looked at some of the spells and some of them seem and actually are impossible. For example the ones about turning into a werewolf vampire and mermaid. Originally I thought it was possible only because there is such things as vampires but maybe not the traditional ones. Plus people have claimed to see mermaids. I've never seen any of these creatures so I can't say they don't exist, but according to a forum I was looking at, it's impossible to change your physical shape with magic. Does that mean they don't exist though? (sorry that was a random question, I was just curious about that) So if some of the spells on this site aren't real, which categories are possible? Meaning can you make someone love you, bring someone back from the dead, become rich? I just picked pretty popular spells, but basically which ones (in a broad sense) are possible and which ones are not? Sorry if this is confusing and long. Also I would really appreciate someone messaging me, or giving me the chance to message them. Just so we can talk, i'm not a fan in group chats. Thanks in advance.