Unless you're technically astute enough to critically review each and every patch, I would recommend you set it for auto-update. Here's how to do it.
- Go to Control Panel
- Click on Security Center
- If not already set to "ON", click on "OFF" next to Automatic Updates to change it
- In the "Manage security settings for category" click on "Automatic Updates"
- Click on the radio button next to Automatic (recommended) and set the frequency to every day at an hour when you rarely or never use your computer