A:
I did some research and tested the tablet with the S pen in Best Buy. It comes with PS touch. Very nice. This is a breakthrough. The price/size/S-pen allow on the go sketching without the sloppy feel of other blunt pens or fingers.
PS touch is great, but I found that Sketch book pro for Andriod better for drawing/painting. Smoother lines. PS touch is great for photo editing on the tablet. The two together are best.
To transfer files I need to use E mail attachments/drop box. I have been unable to save to or from the external SD drive or USB adapter/flash drive. The files are small enough that this isn't a show stopper though.
Oh, another point: I found that the protective plastic you can apply over the screen retards / impedes the S pen tip on the surface. I had to remove it to draw well.
Hope this helps.