Yasf

  require 'yasf'

  result = Yasf.crawl do
    base_url "http://www.wowebook.com"

    property :page_title, xpath: '/html/head/title'

    collection :books, xpath: '//*[@id="content"]/div/article' do

      property :title, xpath: 'header/h2/a/@title'do |data|
        data.to_s.upcase
      end

      property :description, xpath: 'div/p'

      property :download, xpath: 'div/p/a' do
        field :href
        field :title
      end
    end
  end

  puts result.page_title

  result.books.each do |book|
    puts "Book: #{book.title} -> #{book.description}"
  end