Sure, I give it a try...

Q1. What is the name of the materia you find in the Sleeping Forest?
A: Kjata

Q2. What was the name of the cannon at Junon?
A: Sisster Ray

Q3. What is Aeris' final Limit Break?
A: Great Gospel

Q4. How much AP does it take to master the Life materia?
A: Enough to keep me busy for a few hours

Q5. How many Weapons are there?
A: Ruby Weapon, Emerald Weapon, Diamond Weapon, Saphire Weapon and Ultimate Weapon. That's 5.

Q6. How many adamantines do you need to make Sqaull's Lionheart?
A: Just 1... I think.

Q7. What are the controls to Zell's Burning Rave?
A:R1,L1,R2,L2,R1,L2,R2,L1 ^ v < O > O v R1,L2 square, O ^ > ... and you have to do it with your tounge.

Q8. Name the special magic Selphie does in her Limit.
A: Wall, Rapture, Full Cure and The super cheaty End.

Q9. How many specials Does Quintis have?
A: I guess you mean her Blue Magic limmitbreak, right? She have... let's see... I think it's 14 or 15...

Q10. How many hits does Squall's Lionheart special do?
A: About 20...

Q11. Fighting the last boss he uses an attack that may render 1, 2, or 3 of you characters useless. What does the status mean?
A: Well... there's actually 3 stats that makes your characters useless... Pertify, KO and Stop.

Q12. How many Eidolions are there (counting Eiko too)?
A: It's 12.

Q13. How name the Blue Magic Quina leans from eating a Goblin, Frog, Chimera, Cactuar, and Dark Cat?
A: Goblin= Goblin Punch Frog= Frog Drop Chimera= Aqua Breath Cactuar= 1000 Needles and... Dark Cat? I can't remember any creature with that name...

Q14. What is the last Magic for Vivi and how much MP does it take?
A: DOOOOOOOOOOOOOM... I mean... Doomsday! And HE takes as much MP as he wants! Doomsday!!!

Q15. How many double sworded weapons does Zidane have?"
A: Not enough to make me happy.

*Bonus Question*

There is a code (no, not Gameshark) to have Cloud get most of his specials and a few battle (300 battles or more). You get a chance to name him in the beginning of the game. What is the name to enable the code?

A: I have no idea since I never use cheatcodes.