You will confuse to tell what bitcoin or cryptocurrency are if youself didn't have knowledge about it.
thats true but all here in this thread are already crypto enthusiast we all have a knowledge pertaining to cryptos . we dont need to be a pro to be able to teach someone because basic understanding on crypto is already enough them .
there will many question posed to you and you can't answer it and other people will doubt to know more about it.
just tell them the truth .if you cant answer the question that they will throw , just let them use google but i guess they wont ask more question rather they will only ask on how to start with bitcoin or in cryptos . the simple answer could be recomend them a trusted wallet . show them where to find the recieving and sending address . that should be the basic .