How to setup and use the PSG

Something does not work correctly, so I need to start the Product Selection Guide as it was the first time /reset the Product Selection Guide. How can I do that?
The Product Selection Guide is stored in the internet browser's cache memory, so you need to clear the content of this. The cache is cleared using the following procedure:

Internet Explorer:Press Ctrl + Shift + Del. A window opens and make certain there is a check mark in “Temporary Internet files and website files” and “Cookies and website data” before pressing the “Delete” button.

Chrome:Press Ctrl + Shift + Del. A window opens and make certain there is a check mark in “Cookies and other site and plug-in data” and “Cached internet and files”, and “Hosted app data” before pressing the “Clear browsing data” button.

Firefox:Press Ctrl + Shift + Del. A window opens and make certain there is a check mark in “Cookies”, “Cache”, and “Offline Web Site Data” before pressing the “Clear Now” button.

Safari:Go to the Tools menu in the top right corner. Select “Reset Safari”.A window opens and make certain there is a check mark in “Remove all webpage preview images”, “Remove all website icons”, and “Close all Safari Windows”, and “Remove all website data, before pressing the “Reset” button.