I want to make a small bi-fold brochure currently there is a rather thrown together word document which creates two brochures from one sheet of A4 of paper.
if you imagine the paper is in portrait and then both the top and bottom are folded in half to create the brochure
I was wondering if there was a way to too do this in Writer? I know I can create a bi-fold A5 brochure from a single sheet of A4 but I want to make two brochures from a sheet of A4 if that makes sense?
It is not clear from your description whether you are printing A5-sized (2-up) or A6-sized (4-up) brochures on a single A4 sheet. Please edit your question to clarify this. You are probably best using either columns or linked frames to acheive what you require but this is best left to an answer.
As @oweng commented it is not clear what exactly you want to print. Here is some general information for brochure printing Printing a Brochure - LibreOffice Help
I also recommend to have a look at the free guides which you can download from http://www.libreoffice.org/get-help/documentation/