Shortcut to start the task manager: Hold Ctrl+Shift+Esc and release them. Presto, the task manager is open.
Google Chrome is good, but not the best. Try Firefox. You'll probably love it.
If you don't need to use hybernation, it's best to just disable it.
It's always a good idea to uninstall any application that you no longer need or use.
Periodicaly run Ccleaner. Monthly for a light user, up to weekly. It get rid of tons of junk, like obsolete temporary files. It can also fix most registry errors. It also make you anti-virus scan much faster as there are less files to scan.
If you have a conventional hard drive, you need to defragment it regularly. About once a week is a reasonable start point.
Try Defraggler from the makers of Ccleaner. It does a much better job than the default offering.
Electro, January 2015