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First, navigate to the LastPass downloads page. Choose the version you would like to use: Mac, Windows, Linux, or mobile.
Once you have downloaded the version you would like to use, you may receive a message like the one below. Choose to save the file. 
This will launch the LastPass wizard. Follow the instructions in the wizard to install their plug-in for your browser.
At the end of the wizard, you will be prompted to create a LastPass account. Enter an email account, password, and password prompt. There is no way to recover the master password, so be sure to make is something memorable.
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