Did you know, that on any web browser, you can use the CTRL and ENTER keys to quickly add www. and .com to the website you are typing in?
For example, if I want to go to http://www.amazon.com, I can simply type the word amazon in the address bar, then hit CTRL and ENTER (at the same time) and www. and .com will be added and you will be taken to the website. Keep in mind if you have already gone to the website, it may autocomplete the address before you need to use the shortcut.