[the word talent and trend] - help regarding grammar!

plz help me with these..

(1)is the word "talent" a noun or an adjective?

(2)playing jokes on April fools day is common in many regions although none knows how the tradition began.
the word in bold carries a mistake but i am not clear about it... whats that???

(3)noone but him could have told them that the thief was i.
the use of this word here is correct... which law of pronoun does this correspond to??

plz help me with these..

(1)is the word "talent" a noun or an adjective?

(2)playing jokes on April fools day is common in many regions although none knows how the tradition began.
the word in bold carries a mistake but i am not clear about it... whats that???

(3)noone but him could have told them that the thief was i.
the use of this word here is correct... which law of pronoun does this correspond to??

1) talent is a noun. talented is an adjective.

2) none should be no one.

As for #3, I don't know the names of specific pronoun laws, but in this case, I guess you would treat "but" like a preposition, and you use object pronouns (me, us, him, her, etc.) after prepositions.

talent is a noun. and its no one i believe.

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can i write this in an essay

today, learning multiple languages is becoming a global trend and parents are considering this kind of knowledge for their children more than ever

or

today, learning multiple languages is becoming a trend for many students and parents are considering this kind of knowledge for their children more than ever

are both of them correct??
and which sounds better?

Reply:

Currently, learning multiple languages has become a prevalent trend amongst students and their parents....

Actually, I cannot totally understand the second half of your sentence...

Hope it will help!