Books like Genealogy Online
Elizabeth Powell Crowe
Genealogy Online is 293 pages, about 5 hours 22 minutes at 250 words a minute.
12 books to read next
How long each takes
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The Web Application Hacker's Handbook 15.4 h 
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Ebay for Dummies 7.3 h 
Genealogy Online for Dummies 6.0 h 
Hacking for Dummies 7.3 h 
Internet 16.4 h 
Dataclysm 5.5 h 
Code Complete 16.8 h 
The Sacred Willow 9.6 h 
Doppelganger 8.5 h 
How the Internet Works 6.2 h Bar height shows length. Estimated at 250 words a minute.