Of course, you may not need all 60 of these, but knowing them will make you flexible, fast, and ready to work with whatever tool you're presented with, whether it's a Windows PC, a Mac, an Excel spreadsheet, or a Powerpoint slideshow. Plus, there are extras in here for Gmail and Chrome to boot.

Doing stuff with your mouse is cool. Doing stuff with your keyboard is cooler. These are the most important keyboard shortcuts, ranked from best to worst. (Unless noted, we've listed the Windows shortcuts; Mac users substitute Cmd for Ctrl.) With one exception, despite any flaws, all the shortcuts below are fundamentally good.

We wrote about Vimium, the Chrome extension that adds customisable keyboard shortcuts, back in 2010 and 2012. But I think we buried the lede: If you install Vimium, you can open links without using your mouse, and without hitting the tab key over and over.

Even if you use Microsoft Excel regularly, there's a fair chance you might not be getting as much out of it as you can. Improve your Excel efficiency and proficiency with these basic shortcuts and functions that absolutely everyone needs to know.

Whether you're doing some Spanish homework or exchanging jokes with your French-speaking amoureux, nailing spelling in a foreign language is pretty important if you're trying to get your point across without looking like a dunce. Adding accents is easy now, thanks to improved keyboard controls on nearly every device. No matter what phone, laptop, or desktop you're on, you can add accented characters pretty easily, as long as you know where to look.

Looking up directions on Google Maps is a little clunky on the desktop. You have to select your starting location, your destination and your method of transport. But if you're on Chrome, you can build three shortcuts to get directions right from the address bar, without a single click.

Many of us spend a great deal of time on YouTube. Sure, there's a lot of educational content on the video sharing website but time is mainly wasted watching viral videos. You might as well make the most of it by learning some shortcuts that will save you time (so you can watch even more useless videos).

Mac: Spotlight is a great way to search for just about anything on your Mac, but it's usually a couple more clicks to get to the Get Info panel if you need it. OS X Daily points out you can get there quickly with a keyboard shortcut.

We're huge advocates of keyboard shortcuts here at Lifehacker. They only take a few minutes to learn and result in hours of regained productivity time over the long run. Here are 60 essential keyboard shortcuts every office worker should commit to memory.

There's a lot of stuff out there on the web, and you want to be able to get around all of it fast. You can of course make use of your mouse but there are always times when a keyboard combo is more efficient and more convenient. The ones we've listed here have all been tested with Google Chrome, but many will work with other browsers too.

Chrome: In the newest version of Chrome, Google changed the backspace key's behaviour so it no longer works as a keyboard shortcut to go back a page. Go Back with Backspace is a Google developed extension that brings that behaviour back.

Mac: Spotlight search is great, but some search terms come up with a ton of different document categories. OS X Daily points out that you can easy jump between those different categories with a keyboard shortcut.

Mac: The best part of working in the command line is the fact you never really need to touch your mouse, but navigating through the commands you've used can be a bit cumbersome. Over on How-To Geek, they point out a simple way to jump between prior commands using the mark feature.

If you've ever lost a form you're filling out because the Backspace key sends you to the previous page, get ready to be happy. In the newest Canary builds of Chrome, Google has added the ability to stop using the Backspace key as a Back browser button.

Custom macro keypads are great for shortcuts in video games, document editing, or anywhere else a good keyboard shortcut comes in handy. The problem is they tend to get expensive, especially when you look at higher-end models. Luckily, it's easy and cheap to build your own.

Mac: While learning keyboard shortcuts certainly puts you on the fast track to obtaining your official productivity geek credibility card, it's not for everyone. OptionSpace is a little app for OS X that allows you to instantly pull up a search menu to find various menu bar items just like your would with Spotlight.

Windows 10 comes with a few new keyboard shortcuts to take advantage of new features like the virtual desktop and the action center. Here's a handy table of shortcuts you might not know about yet.

OS X got rid of the option to "Save As" in favour of "Export" a while ago, but Appleworld Today points out that you can bring it back in a lot of apps by holding down the Option key.

If you want to give the impression that you're a master of Windows 10, learning a few keyboard shortcuts is the best way to go about it -- you can navigate around the interface, get apps in position, trigger events and change settings with a couple of taps on your keyboard. Here are 49 shortcuts that will turn you into a Windows 10 ninja in no time.