This section of the website is self-contained, with it's own website name - though it should link seamlessly and transparently back and forth to the main section.
It concerns itself with system maintenance - notably
Anti-Virus and Malware protection
Cleaning out redundant stuff from the system
Stopping trackers and the like
Protection against Password and Identity theft
Getting your system running faster without hardware changes
The various aspects of security and cleaning are set out on their own pages, for clarity, but remember that the subjects are very interlinked, and should be considered as a whole. Just carrying out the suggestions in one section are never enough.