Add to Chrome.
Click 'Add extension' above.
The installation process should take less than a minute.
Next, you'll Create an Account.
Why did the LastPass Icon turn into an ! (exclamation point)?
When the LastPass Icon in the toolbar turns into an !, this means that LastPass has a security notification for you that applies to current site you are on. Click on the ! icon to reveal the notification. Once you have clicked on the ! icon, it will change back to the LastPass Icon.