Hello! Thanks! Regarding the automapping, I always use the terrain brush to draw a section of the wall, then I use the automapping tool to place the rest of the tiles (eg. a wall with 2 or 3 tiles of height). To do that, after drawing with the terrain brush, press CTRL + M and the wall will be completed. Don't forget that you have to be on the right layer, which is the layer the rules are pointing to. I'd recommend using the ancient ruins demo first as it's much smaller and simpler. I also recommend using Tiled docs and their Discord so you get a better understanding about the software in general.