Are these sentences correct:
1-There are some books here I want to get rid off. You can take them but you can't pick and choose, You can either take all of them or leave them.
2-There are some books here I want to get rid off. You can take them but you can't pick and choose. You can either take every one of them or leave them.
3-There are some books here I want to get rid off. You can take them but you can't pick and choose. You can either take each of them or leave them.
I'd say "It's all or nothing."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
Context is always important; labelling is rarely important.
It's "get rid of" not "off".