If you find a Guide that is not current, PLEASE PUT IT IN THE RECYCLING NOW.
That would be good advice but for the fact that ANY printed document is outdated the moment it enters the mailbox - perhaps even before. When using printed documents one must always be aware they may be outdated, even if they are the most recent edition. That is for me the biggest advantage of using electronic, from a reliable supplier.
As for the "booking out": that must be another UK peculiarity; but of course every individual aerodrome has every right to create its own habits and even rules. I do have known aerodromes on the continent, though, where the "field commander" (a term not defined in the AIP) must give permission for every take-off, by local regulation.