Some default may not be appropriate when running it on a different user than the one who installed it, but CC3+ does remember the last directory used, so once you save your map in a proper location, CC3+ should remember that for the next time. I am guessing that it probably default to the installation directory, where a normal user won't have write access.

Your point 1 is of outmost importance. Always have an idea for what you want to make. Just a rough idea with a few concepts is good enough, but never just "start a dungeon". Have a little thought about your desired layout, or perhaps a central feature you want to develop the dungeon around, or something....

I've noticed that myself. I think it is because rocks are nocturnal and can't grow in the light, they start growing once you cover them with your sleeping mat.

Looks like a great start. Looking forward to how this will turn out. This style can really look nice.

Seems to be back now.

I think that's reasonably efficient. Took 40 minutes from the time the power disappeared and until the power company had sent people to the location, found whatever problem it was, and fixed it, and that's at 1am in the morning. Way short of the 3 hours they predicted. I am generally quite happy with the power stability here, things like this usually only happens once every 5 years or so, and it is always quickly fixed.

Their notification system is quite efficient too, the power outage map on their website appears to be nearly real time. It is the first thing I check when power goes out, and it was fully updated when I checked just a minute after the power went out, no way a human would have had the time to update it. Email and SMS notifications dropped into my inbox immediately after that.