Most of the links for the handbook in the resources don't work :/ The only one I can open is the one thats from "(May-2018)" and it only has 24 pages you can view.
However,
Another member (
@HelensNepenthe ) posted a thread with this link of jpg files of each page:
https://mega.nz/#F!0w9GxAYb!BCQsghRpneVXDXoGwuQEOg
To my knowledge it is legitimate and complete. If anyone has a copy that's straight from exit that can verify, that'd be lovely <3 hope this is helpful