I don't usually include outright ads in this blog, but ArtistNetwork has some great videos, created by artists that many of us are familiar with, from their books. I don't know the pricing of these classes, but they look good.
Here are some of the artists:
Hazel Soan
Soon Warren
Jean Haines
Julie Gilbert Pollard
Paint Impressive Watercolor Flowers
How to Place Figures in Your Landscape Paintings
"Even just a single figure, carefully placed, can add life, a sense of scale and real interest to your landscape paintings."
Place Figures in Landscape Paintings