Where to start with HPS Napoleonics?

[David G]

I've just about worked out that Black Powder is some sort of reference to, or includes, the HPS Napoleonic games (I think). Looking at the HPS site, there are a quite a lot of (not cheap) games in the series.

If I wanted to find a reasonable selection of ladder opponents, which of the Napoleonic series should I get?

Thanks.

David