Your spacebar is an excellent timesaver on your Mac if you know how to use it. One great use is open spring-loaded folders in an instant. If you're not familiar, your Mac's folders are spring-loaded by default. This means that when you drag something on top of them, they'll open automatically if you just wait a few seconds. If you aren't feeling particularly patient, however, just press the spacebar. Doing so will cause the folder to open instantly. More »