Here are a few links to other wargaming sites which may be of interest to you.
The oldest continuously operational wargames club in the UK.
Dozens of free rulesets to download and use.
Special interest group catering for the late medieval/early renaissance periods.
The oldest special interest group dealing with the period 3000 B.C. to 1500 A.D.
The premier wargames magazine.
Specialist military and historical bookseller.