Talk to the orchestra director. My daughter was in orchestra and played the violin. She had never played any instrument.
She picked up on it quickly.... her 6th grade was first year and she was in beginning. By 7th grade, she was in Advanced and 8th grade Chamber through 10th grade.
Our schools had tutors available that would tutor during the class time. It was really economical... maybe $15 a lesson, because all of the students participated in some sort of tutorial program. It was worth every penny. We moved on to a more detailed instructor for all year lessons which also helped.
My daughter was pulled in by the director to help beginners. It counted as volunteer time toward her National Honor society requirements.
I really don't think a video will do you justice because it is important to have communication so you know what you are doing right and wrong.
Best wishes!