Before you doing anything, use the search facility in this forum. Look for 'Xytar' and
read what happened to 'Arby'. He took the bold step of setting up a studio and it cost him
dearly when it failed (for a variety of reasons). Working for someone else in their
studio? Then you will be another wage slave and get disillusioned again. At best, the
chances of you a) making good money and b) being happy doing it are slim. Big studios? Why
do they want someone hanging around - lots of artists are uncomfortable with additional
people there when they are working.
Apple courses?? They offer courses?? huh?

Sorry to be negative, but what you are suggesting just isn't very practical. You
need to do some more research (hence this post I suspect) before considering this as an
option.
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Veni, Vidi, Aesculi
(I came, I saw, I conkered)