Since you only do it once, maybe twice, can a person just rely on learning repair and remodeling tips from the internet, books and TV networks such as DIY Network?

I’m writing an essay on solar energy, and I need atleast one source from a periodical about solar energy. I can’t really find excellent periodicals, but I don’t have access to my library at the moment. Are there any excellent periodicals on solar energy that can be found online and give decent information about it so I can end my essay? Thanks.