Techy

Starbucks is offering free Wi-Fi to all customers, at every location, starting today. Whether you're clicking connect on Starbucks' Wi-Fi or some other unsecured, public Wi-Fi network, here's how to stay safe and secure while surfing a public hotspot.

Whenever we talk passwords, we always preach the same thing: Use strong, difficult-to-remember passwords, and different passwords for every site. Easy to say, extremely difficult to do through sheer willpower. I've tried many password-remembering systems, and this is what I've stuck with. To paraphrase photographer Chase Jarvis, the best password manager is the one you have with you.

Q&A for professional and enthusiast programmers

The iPhone has the largest selection of apps on the mobile side, but that means it's also the most frustrating to find what's worthwhile. For our fourth annual Lifehacker pack for iPhone, we're highlighting the apps that help you stay productive, connected, informed, and entertained.

S Spreadsheets are one of the most mystifying pieces of software you'll encounter in your adult life. As scary as they can be, though, you can do an awful lot with just four simple skills. For the purposes of this article, we'll be focusing on Microsoft Excel, since this is the most widely used spreadsheet software.