General Tricks

Windows hidden "god mode" folder
Windows offers a centralized Control Panel for all of the OS settings, which makes it easy for users to tweak everything from desktop background to setting up a VPN. To enter this mode, create a new folder with this exact name (copy and paste it): God Mode.{ED7BA470-8E54-465E-825C-99712043E01C}. The folder icon will change to a Control Panel-style icon, and you will be able to jump in and change all kinds of settings. Note: Don't try this on Windows Vista 64-bit as it's known to cause a reboot loop.

Use Problem Steps Recorder
This handy tool automatically records any mouse clicks and takes screenshots for you. If you need tech assistance with your computer, go to Run by typing Windows + R, and then type "psr." Use the tool and by the time you are finished, you can send this information, neatly compiled automatically, to the person helping you with the issue. It will make the process of finding the problem much easier for them, which means you will be able to get your system up and running faster.

Find/Delete large files wasting space
A handy tool called WinDirStat (Windows Directory Statistics) can be used to easily find which files and folders are taking up the most space on your drive. From there, you can delete them and open up a ton of storage space.

Reduce the number of programs running at startup
If your PC is taking too long to boot, it’s probably because you have far too many programs running at startup. Reducing this is easy, it will make your PC launch noticeably faster and lighter upon first load. To change the items running at startup, go to Run using the hotkey Windows key + R, and type "msconfig." A small window will appear (see the screenshot below), select the Startup tab. From here you will be able to turn off many startup programs, which can shave several seconds (or minutes) off your boot time. (Note Windows 8 has moved this functionality to the Task Manager). Try to make sure you research what you are turning off as some processes might be needed by third party programs or drivers you have installed.

Cloud backup important files
If you’re working on a critical paper for school, work, or any other major project, make sure you are backing up the file not just locally. You can use services like Dropbox, Google Drive, or any of the other popular cloud storage solution which will do the legwork for you on the background. Of course, you can also throw the files on a thumb drive or external HDD just to be safe but backing up to the cloud can be done seamlessly which is twice the advantage.