shockym's post reminds me of another good point:
Don't just use one source. Use multiple sources. Everyone - even the absolutely ethical - will have an angle, from ebook authors to site owners to forum administrators. They're (okay, we're) all hoping to get you to use their product, whether it's reseller hosting, dedicated servers, forums, web sites, marketing mailing lists, you name it. But by looking at multiple sources, you stand a better chance of buying into a pyramid scheme. It's a bit like comparison shopping for a car: you may ask the dealer questions about the cars, but if you're smart about it, you'll do your own research as well.
Another analogy is using Wikipedia for information. It can be a good starting point for further research, but it should not be the only site consulted. (There are plenty of companies that add and edit Wikipedia articles as part of their marketing efforts - so never mind the WikiMedia council's high-minded aims to keep the site from showing an overt bias, bias does creep in.)
In the end, you may reach the conclusion that deciding to become a web host is like just about anything else: there's only so much you can learn by reading about it. At a certain point, you've got to actually get out there (work tech / software support, sell hosting to your friends and family for a few years, something that gives you actual practical experience).
