I'm new to CCleaner and would like to take advantage of the program by completely cleaning my system, I've read the guide but am still not sure about the registry tab. Could somebody kindly explain by using the registry tab option what exactly would be removed from my system.
Just wouldn't want to delete anything that can't be retrieved..
If you persist, then use the option to create a backup, that should cancel out any accidents.
If damage is done and you are not aware of damage, the situation might deteriorate over time with further usage,
and if sundry other "issues" get fixed before you realise it, you could have aggravation trying to un-wind everything back to normality - especially if you dont know when the problem arose.
Cleaning the registry does NOT reduce the amount of disk space occupied be the registry.
(And a little free space will be taken up by the registry backup.)