The amount of storage and memory you need depends on how you use your laptop. For browsing, email and document work, a standard specification may be sufficient. If you regularly edit photographs or video, use demanding professional software, play games or multitask heavily, additional memory and storage can be useful.
Storage holds your applications, documents, photographs, videos and games, while memory helps the laptop manage multiple tasks at once. Consider how much content you keep on the laptop and whether you use cloud storage before choosing a configuration.