Question!!! How To Work Offline my web browser?

im using firefox... i want to know how to work offline may web browser...

https://www.fakku.net/viewtopic.php?t=16424 megavideo matter...

For Firefox:
Go to "File". It's down at the bottom, right above Exit.

For Internet Explorer:
Go to "Tools". It should be right above "Windows Updates".

thx... already see it...