Thanx for all your help Wojtek!
I put together a set of instructions to help other newbies with this, I have tested and this does work on my Orange Pi Zero!
Use Etcher to flash this image to your microSD card (I used a 16gb kingston and I dont think you should use smaller than 8gb): Armbian_5.38_Orangepizero_Debian_stretch_next_4.14.14.img
You can get that image here:
Connect via wired lan first, then power it up!
boot up OpiZ and SSH into wired lan IP (get this from router or from ipscan tool)
Get thru the first run stuff, then these two steps:
sudo apt update - this will take 5 min or so
sudo apt upgrade - 10 to 15 min or so
once these are done, do your wifi if you want to use the wifi instead of wired ethernet. Skip if you want ethernet.
Use this command to setup wifi
once your wifi is setup shutdown the Opi and unplug the ethernet cable. Boot back up and find your new wifi IP and SSH into that.
to use the shutdown command:
Up to this point what you have done is pretty standard first run stuff for any Rpi, Opi, BBB etc
Download/clone AstroPrint repo with this command but CD / first to ensure your in root dir
sudo git clone https://github.com/bula87/AstroBox.git
Install/Setup with this command:
When its all done you should be able to open AstroPrint on your web browser via your Wifi IP like any other build.