Scribd is a subscription-based service with a lot of content protected by copyright and terms of service. Downloading content without permission might be against their ToS and even illegal in some cases, depending on the region. So, my first thought is to be cautious about suggesting any methods that might violate the law or Scribd's policies.
Additionally, maybe the user is using an outdated version of Scribd (version 3) which might have had different features. But I'm not sure if there was a version 3 specifically. It's better to focus on current, legal methods.
Alternatively, maybe they want to download content for offline reading, which the Premium subscription allows. So the answer should guide them towards that. If they can't afford it, suggest free alternatives or public domain resources.