Magic Forums

First of all, I'd like to say that I'm new to witchcraft and I have a lot to learn. But I'd like to ask how to know if a spell is true or not. I've read that all the spells related to becoming something non human (mermaid, werewolf, fairy...) are false. I understand that, but are the spells related to summoning also false? For example: to summon a fairy or a guardian? I'm really into fairies and I'd really do anything to see one again (I saw one when I was like 5 years old).

Thanks for reading my question, and if possible answering.

(Sorry if I made any mistakes, I'm Spanish and English isn't my first language)