Denver author and comics artist R. Alan Brooks meets a lot of people at the city’s top-tier art openings and cultural events, from the Denver Art Museum — which weeks ago opened its second exhibit featuring his work — to the Museum of Contemporary Art Denver, where he’s readying the release of Season 2 of his “How Art Is Born” podcast. Despite that, Brooks is a relative newcomer to the elite tiers of the art world, having been ignored by the mainstream publishing industry for years.