1-48 Combat is a set of free wargames rules for WWII skirmish, designed for two players commanding a single squad.
The Miniature Wargaming Editor
Wars of the Roses Skirmish Rules
The Cool Guy or Dweeb site offers a set of Wars of the Roses skirmish rules.
Making Hay Fields and Hay Stacks
Here’s a useful tutorial on modeling hay fields and hay stacks.
Away Boarders War of 1812 Great Lakes Naval Rules
Away Boarders is a neat little game for a little-considered theatre of war: The Great Lakes in the late 18th and early 19th centuries. The author also includes some nice 2-D paper models of the ships, as well as counters.
Warmaster Paper Counters
A League of Ordinary Gamers has sets of paper counters for Warmaster armies including: New Kingdom Egyptians, Assyrians, Brettonian, Chaos, Dark Elves, Dwarf, Empire, High Elf, Lizardmen, Orcs, Skaven, Undead, Vampire Counts, and Wood Elves.
Paper counters are a good, quick and reasonably cheap way of trying out a system.