How to install Android apps from your computer
This hub was created in response to a question asking how to install Android apps on a tablet from a PC. The first question I have before explaining this is "Is there a reason you do not just use the Play Store to get your apps?" Getting them from the play store ensures they are the apps you are looking for and that they will work on your device. If nothing else, download a file manager from the Play Store that will allow you to explore your SD card and install the apps (I use Astro FIle Manager).
1. Download the app you are looking for. Apps end in the filetype .apk, so if you are looking for Angry Birds do a search online for "Angry Birds .apk" and download one to your computer.
2. Install your tablet on your computer. If you have Windows 7 or 8 then this will be done for you when you hook it up for USB tethering. If not look up drivers online for your tablet by brand and model such as "Samsung Galaxy windows vista drivers".
3. Make sure your tablet is in "Mass Storage" mode. Most tablets are in this mode by default so this should not be an issue.
4. From the computer, drag your downloaded .apk file to your tablet internal or SD storage.
5. From the tablet, launch Astro or whatever file manager you have and click on the .apk file.
6. The tablet should recognize the the file and ask if you want to install it. Click Install.
These steps are a little general because they vary come based on the tablet you have and how much electronic experience you have. If you have any specific questions please feel free to ask them in the comments.