In this ClearTechInfo video the instructor shows how to use the Firefox 3.5+ private browsing feature. To use this feature you need a Firefox version 3.5 or more. Now to start a private browsing session go to tools and click on Private Browsing button. This will trigger a new private browsing session that will now store any browser history, search history or any temporary internet files for that session. But this will still allow you to download and keep files and also add bookmarks. This video shows how to use the private browsing feature of Firefox version 3.5.