Knowledgebase is a categorized collection of answers to frequently asked questions (FAQ) and articles. You can read articles in this category or select a subcategory that you are interested in.
Login to cPanel and click the Softaculous icon.
Once softaculous loads you'll find an icon all the way in the top right which looks like a box icon. If you hover over it, it should say 'All Installations'.
Click the icon and from there you'll see all of the scripts you've installed and you can uninstall and manage your installed scripts.