If you use Excel 40 hours a week (and those are the weeks you are on vacation), welcome to the MrExcel channel. Home to 2,400 free Excel tutorials. Bill "MrExcel" Jelen is the author of 67 books about ...

Learn how to master Excel for data analysis and uncover actionable insights with this step-by-step guide. Perfect for beginners and pros ...

Kenneth Harris, a NASA veteran who worked on the James Webb Space Telescope, shares how hardware and software engineering combine to make the $13 billion observatory function. He explains how the ...