Help me please! To find an appropriate book

[مدیر بخش زبان خارجی]

Hi

I want to teach English to some people who are over 20
they didnt know anything about english
they didnt finish their elemantary school so they dont know farsi either!
introduce some books that is suitable for them
Hip Hip Hooray are tought by some institute but it is for children
help me please what should I do?

Hey
in this kinda situations you can use the books are being thought in our elementary schools then use modern methods.
do you want sth special? or it's OK