Learn about the bow: how it’s made, how to take care of it, what the parts are named. Can you show where the head (or tip), hair, stick, and frog are? What about the eyelet (or pastille), end screw (tightener), ferrule, bow grip, and winding (wire) are?
Learn how to hold the bow.
Here’s a great video! https://www.youtube.com/watch?v=duOBeTA4djk (embedding disabled. Sorry.)
Learn how to place the bow on the string.
Now you can learn how to pull the bow across the string (“arco“) in different ways:
longer strokes (=legato)
I loved watching how the violinists in this video “saved” their bow on a long, slow note. Watch and see!