Hi..can you pls explain to me precisely and ...

It depends on what kind of Website do you need. If you looking for something personal such as Blog, in order to publish content, the best platform would probably be

I dont think anybody can answer that precisely here, that could take a lot of space in this site. But you can see tutorial to make a website here.

First decide purpose of your website,and according to it,create website.
There are many category in web design,so its not possible to explain preciously,here. by my opine,to create good website,hire any good web designer or web design firm,

for more information,contact here,
web design London

Just go to http://www.webstarts.com/AsianCulture and make an account, it's as easy as could be.

easy way to make a website is to go to 

 http://www.webstarts.com/?aff=mhassan20

and you dont have to worry about coding or anything everything is so easy in it :) good luck

You can find many resources for tips and tricks to built your website. however yes you can download wordpress or joomla templates and use them for your site. But make sure to add these 5 things without which your website is incomplete :

1) Cross browser compatibility
2) Avoid popups
3) Fast loading
4) User friendliness
5) Search engine friendliness