While I have no intentions whatsoever of putting you down, your question reminds me too much of personal experience last week to refrain from comment:

My girlfriend was arriving at PEK and I was to meet her there with a car. We were running late -- so by the time we reached the toll booth, she had already fetched her bags and was en route to the exit. Based on the driver's instructions, I advised her to meet us outside of door #11 on the departures level. ....in spite of the clearly marked signage, this advice flustered her and set the trip off on a sour note.

That having been said, I would still like to believe that anyone who's been in an airport more than once would be able to figure out the lay of the land within 5 minutes.

Getting back to your question, the doors are numbered 1 through 13 (or so). The international section comprises the first 6 or 7, while the rest is domestic. IIRC, there is only one Starbucks in the arrivals lobby and it is located between 4 and 5.