There are three different size/weight ranges for a laptop: a netbook, a laptop, or desktop replacement. Although all of these fall into the broader concept of a “laptop”, their end usability differs and can impact your choice. Here is a brief rundown of each: Netbook (also known as a mini notebook or an ultraportable) – with a portable .... Things You'll Need. Internet or retailer catalogs for comparison; Computer retailer visits for demonstrations and to ask questions ...