It’s always such a boring to type http://, www. and .com whenever we want to visit a certain website. But being myself as a lazy person who is often looking for ways and means to make my task or job simpler, I simply use some simple tricks like, you can type in word like gedetbasumatary, and use shortcut keys to complete the url with a http://, www and a .com.
So guys there is a simple tricks on modern browsers, such as IE7 and Firefox, hitting Ctrl + Enter will automatically fill in the http://, www. and the .com part of the URL. Here’s an Example example. I type in gedetbasumatary
Now hit Ctrl + Enter together and it will automatically fill up the http://, www. and .com
Voila you have saved 15 keystrokes 
Here’s few more shortcut key combinations to complete a URL.
Ctrl + Enter - Auto-complete .com address
Shift + Enter - Auto-complete .net address
Ctrl + Shift + Enter - Auto-complete .org address
If you add Alt to any of this key combinations, it will auto-complete and open new address in a new tab as well. For example, Alt + Ctrl + Enter will auto-complete .com address in a new tab.
Note:- I have experiment this tricks in Firefox and IE 7 only and it works well. There is a possibility of working in other browser as well.
Additional Keyboard Shortcuts
Open links in a new tab in the background CTRL+click
Open links in a new tab in the foreground CTRL+SHIFT+click
Open a new tab in the foreground CTRL+T
Switch between tabs CTRL+TAB/CTRL+SHIFT+TAB
Switch to a specific tab number CTRL+n (n can be 1-8)
Switch to the last tab CTRL+9
Close current tab CTRL+W
Close all tabs ALT+F4
Close other tabs CTRL+ALT+F4
update1
- Pressing F3 will bring find in this page search bar.
- pressing F11 will expand your screen
- Pressing Ctr + r will reload your screen or say will refresh it.
So do you also have some tricks and want to share, just leave a message or contact me.