Academic honesty just means not ripping off other peoples ideas or copying slabs of writing and passing it off as your own.
I'm not sure what your friend meant by you have to "do it" before you hand in your assignments...perhaps they meant that you have to reference before you hand in your assignment?
If you dont know about referencing yet, they should have guidelines available somehwere...I know I got a booklet on it when I first enrolled in my course, if you didn't get this there is probably something on the net that explains it. Make sure you follow the guidelines properly, UNI markers are very hard on this, and you can quickly lose a tonne of marks if you don't do it.