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  can someone explain me how locahosting work... i mean how will i go to it.. and how can i make my domain out of it... pls

Try the installation manual for starters which has links to the popular server packages for localhost development servers.
If you are talking specifically about hosting a public site from your local computer then there are many sites out there that deal with this and this is not one of them .

Andy

A separate note please do not use ALL capitals for forum topic subjects.