The following content is brought to you by Mashable partners. If you buy a product featured here, we may earn an affiliate commission or other compensation. TL;DR: Through Oct. 12, you can sign up for ...

The following content is brought to you by Mashable partners. If you buy a product featured here, we may earn an affiliate commission or other compensation. TL;DR: Through July 21, master the ...

I've been helping readers find the best deals for over five years. If you’ve never worked with spreadsheets before, just opening Microsoft Excel can feel intimidating. The program has so many ...