The "tools" or "options" or "preferences" section is where you do all of the customizing and changing to the settings that can truly change the way you 'enjoy' the program you are using. The 'default' settings are how they are shipped from the factory. As you browse through the options/preferences/settings, you will find this to be like a table of contents of any book. Not only is this where you can make the changes in settings, but learn exactly what the program is capable of doing. When you click APPLY the changes will be made and the settings window remains open. On the other hand, if you click CANCEL it will close the menu window without making any changes, therefore you should never be afraid to go beyond an area within any program's options that warns of 'advanced users only', just remember you do not have to make changes, and if you think you accidentally did or not sure but to be safe, just click CANCEL.
If you find yourself getting frustrated, remember you have the power to turn off the computer and walk away from it... it is when that power is questioned by the computer asking you what you are doing is when you should begin to feel concerned!
