I primarily used the "A" series as my core, but you can lead into this with the free download of "Rising Knight" and buy "Return to...Blacktooth Ridge" to flesh things out even more. Then with A1 and A2 I stuck in the "Halflings Hall" adventure, then ran A3. Then I put in "The Mysterious Tower" mod from Goodman Games for C&C. Then I used "Palace of Shadows".
As far as official goes, there is no official order of use other than within the series, such as the "A" series or the HH-Haunted Highlands series.
I will say that if I ever run the "A" series again I will add in the old "Keep on the Borderlands" module.
The Ruby Lord, Earl of the Society
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