Overview: SQL remains a core skill for data management across industries in 2026Free courses build fundamentals while paid programs offer structure and certific ...

Tutorial Hoping to see in the New Year with a sparkling selection of fireworks photographs? My crackling tips will help you rocket to success!

Functions are the building blocks of Python programming. They let you organize your code, reduce repetition, and make your programs more readable and reusable. Whether you’re writing small scripts or ...

Functions are the building blocks of Python programs. They let you write reusable code, reduce duplication, and make projects easier to maintain. In this guide, we’ll walk through all the ways you can ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Jon covers artificial intelligence. He previously led CNET's home energy and utilities category, with a focus on energy-saving advice, thermostats, and heating and cooling. Jon has more than a decade ...

Have you ever spent hours manually updating a spreadsheet, only to realize there’s a faster, smarter way to get the job done? Excel is a tool most of us use, but few truly master. The irony? Some of ...

SELECT CONCAT(first_name, ' ', last_name) AS FullName FROM employees; SELECT LENGTH(first_name) AS NameLength FROM employees; SELECT SUBSTRING(first_name, 1, 3) AS ShortName FROM employees; ...

Have you ever found yourself endlessly dragging formulas across rows or columns in Excel, only to realize there’s got to be a better way? Maybe you’ve spent hours creating helper columns or ...