Fans get their geek on at Houston convention

As people pass Alex Betsill’s booth at NRG Center Saturday, many could name exactly what he was selling: ocarinas, an ancient instruments that may date back 12,000 years.How do they know? Legend of Zelda, of course. The ubiquitous video game series featured the instrument in 1998’s “Ocarina of Time”for the Nintendo 64.Superfans and less-passionate onlookers alike strolled the aisles of Fandemic Tour’s weekend takeover of the NRG convention hall, where they shopped f