You'd think that PivotTables are the easiest and least stressful way to summarize data in Excel. For a long time, I believed that, too. That changed once I got comfortable enough using GROUPBY and ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee ...

I've been writing about software and hardware for PCMag for more than 40 years, focusing on operating systems, office suites, and communication and utility apps. I've specialized in everything related ...

Retire your old mop and bucket. The top robot mops we've tested keep your floors squeaky clean with little effort on your part. I’m PCMag’s senior writer covering smart home and wearable devices. I’ve ...

In the United States, flu season typically lasts from October to May. The flu virus affects people of all ages each year, and symptoms include coughing, runny nose, fever, chills, body aches, and ...