I've been experimenting with using the Tiled map editor to create isometric maps, in particular I've been trying out these two tilesets:

http://opengameart.org/content/dawnblocker
http://opengameart.org/content/isometric-64x64-outside-tileset

In the case of Dawnblocker, I can't get anything at all, it seems there isn't a consistent "tile size", or I'm an idiot. Either way, I'm throwing mishmashed chunks of surt's beautiful all upons.

In the case of both, pieces don't seem to "stack" like they should. After a while I finally read the comments on the outside tileset :p and discovered that I should use 64x64 for the tileset and 64x32 for the grid, instead of x32 for both and have a confusing mashup of tiles that sort-of worked if I created tens of layers.

I've googled around a bit and can't seem to find what you might call, a generally applicable ruleset for building worlds from iso tiles.

Anyone have any tips? This style makes me very happy to look at, and very angry upon failed execution.

In any case, thanks all and I love the site :D