From Ebob miniatures, a set of miniature wargaming skirmish rules for the Scottish Rebellion of William Wallace in 1297 called Rebellion
The Miniature Wargaming Editor
Feudal Warfare
Wes Rogers offers set of free wargames rules called Feudal Warfare, described as a “fairly simple set” of convention rules.
Making WWI Airplanes From Clothespins
This post on making WWI aircraft from clothespins is not really a set of instructions, but the photos show clearly enough what has to be done. Brilliant bit of model making.
Star Wars Shootout
Star Wars Shootout is a set of free wargames rules for skirmish combat in the Star Wars universe.