I generally use mechanize when I need to scrape something from the web. I found this awhile back and it's helped me https://www.chrismytton.uk/2015/01/19/web-scraping-with-ruby...

I remember trying to use mechanize as a beginning rubyist and I can't recommend it from that experience. Specifically I remember poor documentation and confusing layers of abstraction. It might be better now that I know what the DOM is and how jQuery selectors work, but my first impression was abysmal.