There is some really great free software available online these days, some of it more useful than others, but great nonetheless. Extensoft have put together some really great (free) applications that are simple and easy to use. Many of which extend the functionality of windows such as an enhanced task manager and screen capture software I’ve personally been using and love.
The best one is easily the free screen capture software. I’ve been using it to put together documentation videos on computer systems at work but it can be used for many other things.
Some great tools here that can really come in handy.