Lead Gardens offers a tutorial on making cheap 15mm spanish villages.
15mm
Painting 15mm Horses Tutorial
Anatoli’s Game Room has a tutorial on painting 15mm horses.
15mm WWII German Propaganda Posters
The 15mm Paint Shack has a couple of pages of German propaganda posters scaled for 15mm. You can print these and use them to embellish your WWII terrain.
Making 15mm Vegetable Crop Fields
Big Lee’s Miniature Adventures has an illustrated tutorial on making model 15mm vegetable fields from corded dormats.
Gut Check Solo 15mm Science Fiction Rules v1.7
Gut Check is a set of free wargames rules for 15mm science fiction battles. What makes it unique, I think, is that it’s designed from the start for solo play. The author lists its features:
Designed from the ground up for solo play
Fast playing and zero bookkeeping
Uses normal 6 sided dice (Usually rolled no more than 2 at a time)
Uses activation rolls modified by battlefield conditions for turn sequence
Seamless Over watch and suppression effects built into system
Use any miniatures
Played on a Hex grid for convenience, but could be played with little fuss on a standard table