Different types of URLs

Please forgive me if this entry is in the wrong section of SysChat.

Could you please explain to me the difference between URLs:

Some url begin with http and next to it has the 3 Ws and after that the rest of the address.

Others begin with the mandatory http and without the 3 Ws go on to complete the address.

I tried many times to write the http and www, but some other characters interpolated themselves. Thus I had to edit this entry many times.

Thank you.




Thank you.