Everyone's nervous before a job interview, but there are plenty of ways you can amp yourself up and shake off the jitters. Of course you need to do your research on the company, and practise answers to the most common interview questions. The more you prepare, the more confident you'll feel. In addition, I like to listen to my running playlist before any type of situation in which I'm likely to be nervous but need to impress. You probably have your own tricks, too.

Now that you've polished your resume and practiced inflating your ego a bit, you're ready to nail your job interview. You likely have answers prepared to the most common questions, and maybe even a fresh new suit, but there's one other thing to keep in mind: Your body language.

Do you ever give an imaginary TV interview in the shower about all your very important opinions? Do you wish more people would tag you in those "ask me anything" memes? Well now a bot will interview you like you're a pop star, using questions from old issues of UK music magazine Smash Hits.

As the lead product designer at WhatsApp, Charlie Deets makes decisions that affect over 1.5 billion users each month. That means solving some unusual challenges, such as building a chat interface that even illiterate users can navigate. It also means distinguishing WhatsApp's visual "stories" feature from similar features in Snapchat and Instagram.

On the latest episode of The Upgrade, we're talking about the self-proclaimed "front page of the internet", the massive online community known as Reddit. For some, Reddit is a second home, a place to hang out, post links, chat and trash talk with like-minded friends and foes. For others, it's a confusing rabbit warren with its own weird rules and etiquette, a teeming hive of enthusiasts and trolls, an overwhelming curiosity that they might visit every now and then, but who has time to learn to navigate what's essentially a complex system of message boards?

So you didn't get the job -- bummer. It stings but the process isn't over yet. Before you move on to the next potential gig, do these three things.

This week on The Upgrade, we spoke with Steve Casner, author of the book Careful: A User's Guide to Our Injury-Prone Minds. Steve is a research psychologist with NASA who studies how and why we get hurt in our everyday activities: Whether we're chopping vegetables, climbing ladders, or just walking down the street. We found out how we can stay safe without hiding in bed all day -- and why we should embrace our bad attitudes.

Some journalists spend their careers behind a desk. That's a fine way to work, depending on the beat, but it isn't for everyone. It isn't for Gianna Toboni and Isobel Yeung, who travel the world as correspondents for VICE on HBO.

Aurelia Moser is a developer, teacher, author and also a bit of a cartographer. She works at the Mozilla Science Lab with researchers to collaborate on open source projects, and is also a mentor at Girl Develop It.

Basecamp is a web-based project management tool, and like so many other software tools and startups before it, the creators of Basecamp made it for themselves. They just needed a decent way to manage projects and collaborations. It just happens that other people want to use it too.

Brad Smith knows karate. Not "business karate" or any overwrought metaphor about teamwork; he literally teaches karate. Or at least he used to before he became chairman and CEO of Intuit.

There seems to be a new hack, leak or security exploit discovered every day, and only one piece of advice really remains consistent on how to protect yourself: Use a password manager. The most secure password is one that you don't know yourself.

One of the indisputable virtues of the internet is the availability of free online courses that enable anyone to educate themselves. edX is one such outlet, founded by Harvard and MIT, and offers free, open source courses that are allowing people around the world to get an education that would otherwise be out of their reach.

Todoist is an old contender among to-do list managers, helping people corral their work into manageable tasks for almost a decade. It's grown into a cross-platform tool that can be used for collaboration and project management, but was created simply because Amir Salihefendic needed a way to keep track of his work.

Duolingo is a popular language leaning platform that has helped thousands of people develop their multilingual skills for free. Its gamified lessons emphasise quick learning so you can memorise a few new words without much effort while waiting for the bus.

Getting a great job at a great company isn't easy, and that means their interview questions are going to be difficult. If you thought the usual interview fare like "tell me about yourself" is tough, wait til you see these.

Building something as complex as a car is an expansive collaborative effort calling on people with diverse backgrounds. There are, of course, the engineers designing the actual mechanics, but there are also the aesthetic and tactile elements that affect how you experience the car, each carefully chosen by designers.

It would be a point of pride for any entrepreneur to start a single company and achieve profitability, but Max Levchin has done a bit more than that. He's had a hand in creating an entire string of notable and influential startups.

For over 16 years America's Test Kitchen has approached cooking through a methodic, scientific lens, explaining how to execute a recipe to perfection. In a crowded landscape of culinary television, they stand out for their rigorous testing and accessible recipes.