Start with the work
Choose the processor, memory, ports, and display around the tasks you do every week. General office work is comfortable with 16GB of RAM—short-term working memory—and a modern four-core processor.
Check serviceability
A replaceable battery, accessible storage, and published service documentation can add years to a laptop's useful life. Thinness matters less than repair options for many buyers.
Read the condition evidence
A useful listing separates cosmetic wear from functional test results. Look for battery health, port checks, display inspection, keyboard testing, and exactly what the seller includes.