I've begun taking orders for the Complete Guide to the D90. Just follow the D90 eBook link in the right column until you get to the ordering page. However, please note that I do not expect to ship these until December 20th (there's a small possibility that they'll ship before that). Thus, it's unlikely that you'll get the D90 eBook and To Go booklet before Christmas unless you're in the US. Even in the US Christmas delivery can't be guaranteed, though I'll do everything possible on my end to make that happen. I had hoped that we could make my original December 17th target ship date, but weather has conspired to keep proofs from the printer from getting back and forth as fast as usual. My apologies for the short delay.