Wargamerabbit offers a set of free wargames rules for Napoleonics that include a large selection of YouTube tutorials.
The Miniature Wargaming Editor
Bag End Bonsai How to

It’s not miniature wargaming, but fans of Tolkien and miniatures in general will love this Bag End Bonsai.
8e Cuirassiers 1700 – 1870 Rules
8e Cuirassiers 1700 – 1870 is a set of free wargames rules for the horse and musket period. An infantry battalion is represented by four bases.
Painting White
Painting white as the primary color of a miniature is hard. The video above offers some good tips. As does this one below:
Using Washes To Create Weathering
Armorama has an article on using washes to weather your armor models. While its intended for plastic modelers, it also is great advice for 15mm and 25mm – 28mm gamers. I’m not so sure that it would be useful for anything smaller, though.