If you are still in the shaman's cellar, you can perform a strategic withdrawal north to the exit into the shaman's house, or east to the entrance in the fire forest. IIRC you have to return through the fire forest, since the hatch in the shaman's house remains locked until after he is defeated.
If you are in the shaman's realm, you can approach slowly to draw him up away from his supporting water demons.
I have not tried any traps yet, but was planning on doing so eventually.
I've also just used the summoning dolls as mules and trap detectors. They do not gain experience points or benefit from your main characters' level ups, but must be upgraded through the appropriate skills. If you are lucky enough to find lots of holy water, I would think permanent potions should work on summoning dolls.
The ghosts are not too hard to find if you wander around a bit south west of the house. I also cleared the forest before talking to the farmer, but found the ghosts after searching most of the rest of the forest.
Unless you talk to the imp that you rescued from the spider queen's web and get him to tell you the location of the cave, the tree does not speak to you.
Each saved game is a separate sub folder in the '..\Beyond Divinity\savegames' folder. Sending by email you would probably have to zip and send each save separately. You would not need to transfer the 5 Bd_act#_start folders.