How to take backup of bookmark in mozilla fire fox

hi frndz most of time we take backup of the important files in our computer hard disk, but we forget to take backup of bookmarks (the website which we surf everyday are saved. So here is the way how can u do that! The description given here is about Mozilla Firefox.
1)Open Mozilla Firefox
2)Click on the Bookmarks tab on the screen
3)Click on the Organize Bookmark or you can simply select clt+shift+B
4)Now a new window named Libary will be open and there will be a option Import and
Backup tab.
5)There clicking on the tab u will see a backup option, click on that and follow the
simple procedure.
6)Backup is DONE!