A League of Ordinary Gamers has an article on how to apply decals.
modeling
Tutorial: Making Lava Splashes
Lava seems to be a popular terrain base style — perhaps the whole Mt. Doom thing is stuck in people’s minds. Here’s a tutorial that bills itself as explaining how to make lava splashes, but also has a great deal of information on how to simulate lava in general.
Making Sub Roman Houses
Here’s a post on making “sub roman” houses — the style of dwelling, however, probably covers five hundred or more years.
Making Rubble Terrain
Here’s an easy way to make rubble terrain with good looking results.
Portable DBA Boards
From The Wargaming Site is a brief description of the authors creation of a DBA battleboard.