Add to Chrome.
Click 'Add extension' above.
The installation process should take less than a minute.
Next, you'll Create an Account.
Should I run the 32bit or the 64bit Windows Installer?
You can verify if your Windows operating system is 32bit or 64bit by locating your system control panel.
On Windows 7, click on your Start Menu > Control Panel > System and Security > System.
You can also run the direct download link: https://lastpass.com/dl and LastPass should install the correct build for your operating system and browser(s).