1. Log in to your SolidProfessor account and from your dashboard click on "Download the SOLIDWORKS Add-in".
2. Select your installer based on your operating system.
If you're unsure of which operating system you're running, see this article.
4. Check the box next to "SolidProfessor Web Addin" and click "OK".
5. Click on the SolidProfessor icon from the add-ins toolbar and log in to your account.
If you have trouble using the add-in, see this article for troubleshooting tips.