You can say 我会用筷子 -- wǒ huì yòng kuài zǐ

我会用 (wǒ huì yòng) is a phrase used when you want to say that you can use certain things or equipments.
我 (wǒ) means I
会(huì) means can
用 (yòng) means use
筷子 (kuài zǐ) means chopsticks.

If you want to say 'I can use computers', you can say 我会用计算机 (wǒ huì yòng jì suàn jī )
计算机 (jì suàn jī) means computer or computers.