Hi Mliu, I suggest reading threads in the forum of subjects that interest you, there is a wealth of information available. if you need help with homework, you can ask for help in he homework forums, be sure to completely fill out the provided template.
... correction: you are an idiot who needs help ;)
I was intrigued so I checked:
idiot (n) Middle English (denoting a person of low intelligence): via Old French from Latin idiota ‘ignorant person’, from Greek idiōtēs ‘private person, layman, ignorant person’, from idios‘own, private’.
... i.e. the definition of an idiot is someone who does not know they are an idiot.
The first step to wisdom etc etc. Well done and good luck on your journey.
Welcome to PF.