Personally, I prefer Taurus's approach.

When I first started "striking" Quartermaster in the USCG, I grabbed a standard gov't issue notepad and wrote down those items that I had to know, rarely used/needed, but had to have immediate access to when called upon.

Then I started adding notes on CBR Warfare, ASW, AAW, customs and courtesies, comms freqs, signal codes, etc, etc, etc. This notepad started out 1/4" thick and now it is >2" thick.

I am slowly but surely scanning this info into a book (minus some sensitve items). I think that after I get done, I will post a notice & offer it, via e-mail, to ETS'ers.

Then I'll start making the notes, per area, as Taurus as suggested. Being retarded, uh, I mean, retired military,,,My primary concern will be those areas between my job destinations (Illinois, Kentucky, Alabama, & Texas) and my home (Louisiana).

The US Naval Institute Press does still print the Mariner's Pocket Companion,,,they sell 1,000's every year to the USN, USCG, & NOAA alone. Call them and they can find them. They have probably sold out this year's edition, though.
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QMC, USCG (Ret)
The best luck is what you make yourself!