The first thing to go on ... is ...

[Genrietta07]

Hi! Can anybody explain this expression? I'd be very grateful.

[Anglika]

Welcome to the forum.

It is a little difficult to be precise without more context. However:

The first thing to go on the list is two loaves of bread

The first thing to go on the wall is that picture of your mother.

You can paraphrase it as The first thing to put on the list and The first thing to hang on the wall.

[Genrietta07]

Anglika, thank you very much for your reply!