How to start to learn a classical guitar?

I have bought a Yamaha C40 classical guitar for my son, 10 year old. I don't know if guitars may vary or not. If my son use this website to start his learning, is it possible that he finds that the guitar in video for teaching is different with my son's and he will not be able to know how to place his fingers on his guitar?

The placement of hands, i.e. hand used to play notes and chords will be identical in most cases, although there are variations players adopt when switching between different chords, but that is developed from experience and watching others. For example, a G chord or a D chord may be played with certain fingers depending on the chord you are switching from and perhaps the tempo...but it varies with artists. So what he learns from Guitar Tricks will not impede him or confuse him because a chord is still a chord and a note is still a note. He may learn differet styles for fingering strings etc., but again that is left to style and the sound an artist prefers, i.e. using fleshy part of finger to pluck a string, or a finger nail, or even a pick (plaetrum). Here in the U.S. I never hear too many folks call a pic a plaetrum, but musicians overseas such as India probably don't call it a pic. (Sounds like a bad habit to them perhaps LOL) In fact today I was talking to an Artist from overseas and plaetrum was very natural to him and pic wasn't - but he was also keenly aware of the differences in stringed instruments and natural sounds and pitches too. So whatever motivates your son to begin learning to play should be alright - the instructors here are fabulous I think.