(If you’re looking to install TweetDeck on your iPhone, go here.)
To install Tweetdeck on your computer, go to its homepage at tweetdeck.com:
Click on the Desktop link at the top of the page, and then the download button or link:
If you’ve not got Adobe AIR already installed on your computer, it will prompt you. This may take a while:
You’ll be prompted to save the Tweetdeck file itself
Best to save it—to somewhere you can find it (desktop, for example.)
Once the software is saved, find the file and double click to launch it.
The program will install itself:
You may encounter some prompts on the way:
Once it’s installed, the program will launch.
If not, find it in your Start menu.
[...] Tweetdeck: Installing [...]