In reply to Exksalted:
We went there for trad and had an amazing time - so I can only answer some of your questions.
Getting there is straightforward - from Morbegno a bus runs into San Martino. When we were there, it was cash only. However, all the buses were getting card machines installed, so I'd bet on that having changed by now - let us know!
There is a small climbing shop in Morbegno that is very well equipped and I'm certain would stock the guidebook, there is also a small guidebook in San Martino itself, which is well equipped and once again almost certainly stocks the guidebook. If all this fails, the excellent and friendly Bar Monica in San Martino has all the guidebooks there and they're happy for you to take photos of them.
The area is beautiful and I'd highly recommend some hiking for a rest day. Just walking up the valley and having a nice swim in the river is great fun, or heading up to the Gianetti or Allievi Rifugios for a slice of cake (Rifugio Allievi in particular was the friendliest Rifugio I've ever been to, and the Guardian offered us his rope after we core shot ours on an abseil, and lent us a big cam as well after recommending us a route with an off-width section )although these walk ins are a little long perhaps to be a rest day!.
It's one of my favourite places in the world, the quality of the climbing, and the general vibe is hard to beat. Have an ace time!
Post edited at 12:00