Lightning Talks

You will need to install it. The way to do that, dpednes somewhat on your operating system and the type of file you downloaded. But most often, the way to install is to find the file you downloaded (maybe on the desktop?), and double click the file icon to start the installation. After that, just follow instructions.If none of the above works, needed info includes your OS, and the file type (usually last few characters of filename after . ).