There are LOTS of photos and tutorials out there - here are a couple that I found.  Look for your own as well. Look for EDWARDIAN hair tutorial for _______ length hair.
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Hair tutorial - long hair
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Hair tutorial - short hair (uses a hair piece to complete the look) - you have to click to watch on YouTube

Great video of women's fashion and hair - www.facebook.com/GlamourDazeBlog/videos/gibson-girls-in-1904-edwardian-era-women-brought-to-life-60-fpsbrought-to-life-w/3020469158053142/

Men's hair is much simpler - check out these photos. The key word for the era is SMALL. You will likely need gel to accomplish this - not mousse, pomade, etc.