Technical artist and 3-d character artist

Hi, guys, it is will be very cool, if someone can help me) So, I am interested drawing, digital arts, IT technologies also; I find two interesting perspective for me that reunites all this fields: technical artist and 3-d character artist;
So, if you know smth about it, tell me, please:
Where should study that become tech or 3-d ch artist, perspective of work in the USA and more about these professions?
P.s.thanks in advance)