Usage patterns
〈物〉を箸でつまむto pick something up with chopsticks
He's good at picking up beans with chopsticks.
箸を使うto use chopsticks
My foreign friend is skilled at using chopsticks.
箸をつけるto start eating (touch one's food with chopsticks)
The food was served, but he hasn't started eating yet.
Expressions
箸が進むeat a lot; have a good appetite · appetizing 箸を取るtake up one's chopsticks; start eating