Automatically Open links in new Tab/Window

Normally all our links open in same window or tab. This can be annoying for some users as some don't like visitors to leave their site. And users don't want to click back button to go back to the your website again.
Blogger/Blogspot also does the same so i googled the internet to make links open in new window or tab so that my problem will be solved. After searching many websites I found the one that solved my problem. Blogger Sentral explained this as easy as you are a novice user so this can be very helpful for new Bloggers. If you have a specific problem, read comments.